Blog

{{html Shopify.formatMoney(compare_at_price_min, window.money_format)}} {{if price_varies}}from {{/if}}{{html Shopify.formatMoney(price_min, window.money_format)}}Enjoy the beautiful, peaceful serenity of Quartz Crystal Clusters in your home and office. Wonderful way to bring positive energy to your space. Feng Shui favorite! We recommend using gold cleaning liquid at home to keep your pieces in their original condition. Where possible, it is best to have your pieces professionally cleaned by your local jeweler. Crystal Quartz is the master healer of all crystals that resonates at the level of the beholder’s needs. It works to amplify, manifest, and empower the individual at their finest expression. Its healing properties supports expansion of consciousness to eliminate energy blockages and facilitate open communication allowing energy to flow smoothly throughout our body.Orders are shipped within 48 hours upon placement of order. Please allow 4-6 weeks for production if we do not have immediate availability – we will reach out to you if that is the case.

Clear crystal cluster that makes an exceptional piece in any space indoor or outdoors. The master of all crystals brings exceptional abundance into any space.Each beaded jewelry piece is hand strung from the highest quality materials that are cut from natural mineral sources. They are sensitive to prolonged exposure to hairsprays and scents. To ensure longevity please be gentle and avoid tugging and pulling of these pieces.

Buy direct from our family owned and operated mine. This collection features natural, raw crystal quartz clusters that are used for home decorating, Reiki, mind and body healing and more. Browse mid-grade to the finest quality small crystal clusters to medium quartz clusters in this collection. All crystals in this collection are hand mined at Ron Coleman Mining, Jessieville, Arkansas. Each cluster is natural and are ethically sourced. We are a 5th generation (6th generation has been born but is too young to mine), family owned and operated quartz mine. Follow us on Facebook to view images of our mining operation. When you buy from us, you know where your specimens are mined. If you find something you like, please buy it. Mother Nature produces one-of-a-kind specimens.Arkansas is known for our quartz mineral. Ron Coleman Mine is known to produce the finest, pristine, crystal clusters found in the world. Buy a pristine cluster of crystals from Coleman Mine in Jessieville, Arkansas.

A crystal cluster is a group of crystals which are formed in an open space environment and exhibit euhedral crystal form determined by their internal crystal structure. A cluster of small crystals coating the walls of a cavity are called druse.

Quartz is found in almost every geological environment. It is a common constituent in most of the rock types and soil groups. Granite, sandstone, limestone, and most of the igneous, sedimentary, and metamorphic rocks contain quartz. Quartz contains mainly oxygen and silicon. These two constituents make upto 75 % of the earth’s crust. An alternate name for the Quartz Group is the Silica Group.Rock crystal jug with cut festoon decoration by Milan workshop from the second half of the 16th century, National Museum in Warsaw. The city of Milan, apart from Prague and Florence, was the main Renaissance centre for crystal cutting.

There are many different varieties of quartz, several of which are classified as gemstones. Since antiquity, varieties of quartz have been the most commonly used minerals in the making of jewelry and hardstone carvings, especially in Eurasia.

Almost all the industrial demand for quartz crystal (used primarily in electronics) is met with synthetic quartz produced by the hydrothermal process. However, synthetic crystals are less prized for use as gemstones. The popularity of crystal healing has increased the demand for natural quartz crystals, which are now often mined in developing countries using primitive mining methods, sometimes involving child labor. Roman naturalist Pliny the Elder believed quartz to be water ice, permanently frozen after great lengths of time. (The word “crystal” comes from the Greek word κρύσταλλος, “ice”.) He supported this idea by saying that quartz is found near glaciers in the Alps, but not on volcanic mountains, and that large quartz crystals were fashioned into spheres to cool the hands. This idea persisted until at least the 17th century. He also knew of the ability of quartz to split light into a spectrum. As quartz is a form of silica, it is a possible cause for concern in various workplaces. Cutting, grinding, chipping, sanding, drilling, and polishing natural and manufactured stone products can release hazardous levels of very small, crystalline silica dust particles into the air that workers breathe. Crystalline silica of respirable size is a recognized human carcinogen and may lead to other diseases of the lungs such as silicosis and pulmonary fibrosis.Additionally, there is a rare type of pink quartz (also frequently called crystalline rose quartz) with color that is thought to be caused by trace amounts of phosphate or aluminium. The color in crystals is apparently photosensitive and subject to fading. The first crystals were found in a pegmatite found near Rumford, Maine, US and in Minas Gerais, Brazil. The crystals found are more transparent and euhedral, due to the impurities of phosphate and aluminium that formed crystalline rose quartz, unlike the iron and microscopic dumortierite fibers that formed rose quartz.

Not all varieties of quartz are naturally occurring. Some clear quartz crystals can be treated using heat or gamma-irradiation to induce color where it would not otherwise have occurred naturally. Susceptibility to such treatments depends on the location from which the quartz was mined.

Rose quartz is a type of quartz that exhibits a pale pink to rose red hue. The color is usually considered as due to trace amounts of titanium, iron, or manganese in the material. Some rose quartz contains microscopic rutile needles that produce asterism in transmitted light. Recent X-ray diffraction studies suggest that the color is due to thin microscopic fibers of possibly dumortierite within the quartz.By the 1930s, the electronics industry had become dependent on quartz crystals. The only source of suitable crystals was Brazil; however, World War II disrupted the supplies from Brazil, so nations attempted to synthesize quartz on a commercial scale. German mineralogist Richard Nacken (1884–1971) achieved some success during the 1930s and 1940s. After the war, many laboratories attempted to grow large quartz crystals. In the United States, the U.S. Army Signal Corps contracted with Bell Laboratories and with the Brush Development Company of Cleveland, Ohio to synthesize crystals following Nacken’s lead. (Prior to World War II, Brush Development produced piezoelectric crystals for record players.) By 1948, Brush Development had grown crystals that were 1.5 inches (3.8 cm) in diameter, the largest at that time. By the 1950s, hydrothermal synthesis techniques were producing synthetic quartz crystals on an industrial scale, and today virtually all the quartz crystal used in the modern electronics industry is synthetic. Pure quartz, traditionally called rock crystal or clear quartz, is colorless and transparent or translucent and has often been used for hardstone carvings, such as the Lothair Crystal. Common colored varieties include citrine, rose quartz, amethyst, smoky quartz, milky quartz, and others. These color differentiations arise from the presence of impurities which change the molecular orbitals, causing some electronic transitions to take place in the visible spectrum causing colors. Milk quartz or milky quartz is the most common variety of crystalline quartz. The white color is caused by minute fluid inclusions of gas, liquid, or both, trapped during crystal formation, making it of little value for optical and quality gemstone applications.Smoky quartz is a gray, translucent version of quartz. It ranges in clarity from almost complete transparency to a brownish-gray crystal that is almost opaque. Some can also be black. The translucency results from natural irradiation acting on minute traces of aluminum in the crystal structure.

Elemental impurity incorporation strongly influences the ability to process and utilize quartz. Naturally occurring quartz crystals of extremely high purity, necessary for the crucibles and other equipment used for growing silicon wafers in the semiconductor industry, are expensive and rare. These high-purity quartz are defined containing less than 50 ppm of impurity elements. A major mining location for high purity quartz is the Spruce Pine Gem Mine in Spruce Pine, North Carolina, United States. Quartz may also be found in Caldoveiro Peak, in Asturias, Spain.The most important distinction between types of quartz is that of macrocrystalline (individual crystals visible to the unaided eye) and the microcrystalline or cryptocrystalline varieties (aggregates of crystals visible only under high magnification). The cryptocrystalline varieties are either translucent or mostly opaque, while the transparent varieties tend to be macrocrystalline. Chalcedony is a cryptocrystalline form of silica consisting of fine intergrowths of both quartz, and its monoclinic polymorph moganite. Other opaque gemstone varieties of quartz, or mixed rocks including quartz, often including contrasting bands or patterns of color, are agate, carnelian or sard, onyx, heliotrope, and jasper.

Efforts to synthesize quartz began in the mid-nineteenth century as scientists attempted to create minerals under laboratory conditions that mimicked the conditions in which the minerals formed in nature: German geologist Karl Emil von Schafhäutl (1803–1890) was the first person to synthesize quartz when in 1845 he created micr
oscopic quartz crystals in a pressure cooker. However, the quality and size of the crystals that were produced by these early efforts were poor.Citrine is a variety of quartz whose color ranges from pale yellow to brown due to a submicroscopic distribution of colloidal ferric hydroxide impurities. Natural citrines are rare; most commercial citrines are heat-treated amethysts or smoky quartzes. However, a heat-treated amethyst will have small lines in the crystal, as opposed to a natural citrine’s cloudy or smoky appearance. It is nearly impossible to differentiate between cut citrine and yellow topaz visually, but they differ in hardness. Brazil is the leading producer of citrine, with much of its production coming from the state of Rio Grande do Sul. The name is derived from the Latin word citrina which means “yellow” and is also the origin of the word “citron”. Sometimes citrine and amethyst can be found together in the same crystal, which is then referred to as ametrine. Citrine has been referred to as the “merchant’s stone” or “money stone”, due to a superstition that it would bring prosperity.Quartz is the most common material identified as the mystical substance maban in Australian Aboriginal mythology. It is found regularly in passage tomb cemeteries in Europe in a burial context, such as Newgrange or Carrowmore in Ireland. The Irish word for quartz is grianchloch, which means ‘sunstone’. Quartz was also used in Prehistoric Ireland, as well as many other countries, for stone tools; both vein quartz and rock crystal were knapped as part of the lithic technology of the prehistoric peoples.

Citrine was first appreciated as a golden-yellow gemstone in Greece between 300 and 150 BC, during the Hellenistic Age. Yellow quartz was used prior to that to decorate jewelry and tools but it was not highly sought after.Quartz crystals have piezoelectric properties; they develop an electric potential upon the application of mechanical stress. An early use of this property of quartz crystals was in phonograph pickups. One of the most common piezoelectric uses of quartz today is as a crystal oscillator. The quartz clock is a familiar device using the mineral. The resonant frequency of a quartz crystal oscillator is changed by mechanically loading it, and this principle is used for very accurate measurements of very small mass changes in the quartz crystal microbalance and in thin-film thickness monitors. Prasiolite, an olive colored material, is produced by heat treatment; natural prasiolite has also been observed in Lower Silesia in Poland. Although citrine occurs naturally, the majority is the result of heat-treating amethyst or smoky quartz. Carnelian has been heat-treated to deepen its color since prehistoric times. Inclusions of the mineral dumortierite within quartz pieces often result in silky-appearing splotches with a blue hue. Shades of purple or grey sometimes also are present. “Dumortierite quartz” (sometimes called “blue quartz”) will sometimes feature contrasting light and dark color zones across the material. “Blue quartz” is a minor gemstone.

Prasiolite, also known as vermarine, is a variety of quartz that is green in color. The green is caused by Fe ions. It is a rare mineral in nature and is typically found with amethyst; most “prasiolite” is not natural – it has been artificially produced by heating of amethyst. Since 1950, almost all natural prasiolite has come from a small Brazilian mine, but it is also seen in Lower Silesia in Poland. Naturally occurring prasiolite is also found in the Thunder Bay area of Canada.

Quartz’s piezoelectric properties were discovered by Jacques and Pierre Curie in 1880. The quartz oscillator or resonator was first developed by Walter Guyton Cady in 1921. George Washington Pierce designed and patented quartz crystal oscillators in 1923. Warren Marrison created the first quartz oscillator clock based on the work of Cady and Pierce in 1927. Quartz is extracted from open pit mines. Miners occasionally use explosives to expose deep pockets of quartz. More frequently, bulldozers and backhoes are used to remove soil and clay and expose quartz veins, which are then worked using hand tools. Care must be taken to avoid sudden temperature changes that may damage the crystals. Quartz is a defining constituent of granite and other felsic igneous rocks. It is very common in sedimentary rocks such as sandstone and shale. It is a common constituent of schist, gneiss, quartzite and other metamorphic rocks. Quartz has the lowest potential for weathering in the Goldich dissolution series and consequently it is very common as a residual mineral in stream sediments and residual soils. Generally a high presence of quartz suggests a “mature” rock, since it indicates the rock has been heavily reworked and quartz was the primary mineral that endured heavy weathering.Quartz belongs to the trigonal crystal system at room temperature, and to the hexagonal crystal system above 573 °C (846 K; 1,063 °F). The ideal crystal shape is a six-sided prism terminating with six-sided pyramids at each end. In nature quartz crystals are often twinned (with twin right-handed and left-handed quartz crystals), distorted, or so intergrown with adjacent crystals of quartz or other minerals as to only show part of this shape, or to lack obvious crystal faces altogether and appear massive. Well-formed crystals typically form as a druse (a layer of crystals lining a void), of which quartz geodes are particularly fine examples. The crystals are attached at one end to the enclosing rock, and only one termination pyramid is present. However, doubly terminated crystals do occur where they develop freely without attachment, for instance, within gypsum.

Quartz is the mineral defining the value of 7 on the Mohs scale of hardness, a qualitative scratch method for determining the hardness of a material to abrasion.Because natural quartz is often twinned, synthetic quartz is produced for use in industry. Large, flawless, single crystals are synthesized in an autoclave via the hydrothermal process. While the majority of quartz crystallizes from molten magma, quartz also chemically precipitates from hot hydrothermal veins as gangue, sometimes with ore minerals like gold, silver and copper. Large crystals of quartz are found in magmatic pegmatites. Well-formed crystals may reach several meters in length and weigh hundreds of kilograms. Although many of the varietal names historically arose from the color of the mineral, current scientific naming schemes refer primarily to the microstructure of the mineral. Color is a secondary identifier for the cryptocrystalline minerals, although it is a primary identifier for the macrocrystalline varieties.The word “quartz” is derived from the German word “Quarz”, which had the same form in the first half of the 14th century in Middle High German and in East Central German and which came from the Polish dialect term kwardy, which corresponds to the Czech term tvrdý (“hard”).

Amethyst is a form of quartz that ranges from a bright vivid violet to a dark or dull lavender shade. The world’s largest deposits of amethysts can be found in Brazil, Mexico, Uruguay, Russia, France, Namibia, and Morocco. Sometimes amethyst and citrine are found growing in the same crystal. It is then referred to as ametrine. Amethyst derives its color from traces of iron in its structure.Enjoy the healing power of quartz in any room with our excellent range of quartz clusters. Quartz clusters consist of a bed with many crystals growing from it. The many terminations in a quartz cluster look striking and are believed to amplify and cleanse energy. These specimens are ideal for a crystal healing room, a specimen collection or as a stylish ornament. We have quartz clusters in many different quartz varieties, including aura quartz, smoky quartz and clear quartz clusters.Your Cluster-Crystal will bring energies of joy and light. Your relationship will be infused by these, and they will make you cherish your relationship even more.The healing energies emanated from Cluster Crystal will harmonize the energies of your body, mind, and soul and heal them so that you can establish a sense of balance in your life.For good Feng Shui, put your Cluster-Crystal in the center, northeast, northwest, west, or southwest area. Try to avoid placing your Cluster-Crystal in the north side. It’s best if you can put it right by your bed instead.

By strengthening your connection with your core, it effectively helps you connect better with the divine realm and pay heed to the guidance of the divine guides.Moreover, you will also sense a renewed self-confidence and rejuvenation that will inspire you to start working towards your goals and dreams because you have the ability to achieve whatever you put your mind to.

It polishes your overall aptitude by enhancing your decision-making abilities and your analytical skills so that you can make well-informed choices that keep you safe from harm.Our team of expert authors are certified crystal healers, reiki masters, shamans, each with their own unique insight and expertise that our readers benefit from.

Diana’s expertise and passion for crystals have inspired countless readers and practitioners, and her book has received rave reviews on Amazon. With her clear and insightful guidance, Diana is a trusted guide for anyone seeking to unlock the transformative power of crystals.You will be driven, motivated, and persistent, and you will be achieving so much more than you imagined. These are just some of the things that vibrations from Cluster-Crystal can bring!

If others are meddling, or so criticizing of your ideas that you barely have the confidence to speak about them, these crystal clusters can give you the strength to stick by what you believe in.It will calm your nerves and stabilize your emotions. It will also open and activate your heart chakra! This will harmonize your aura, chakra points, and your physical body.

Put an Amethyst Cluster-Crystal in the south corner of your room or any space to get started on cleaning and clearing the life energies flowing into your space!You will also find joy and satisfaction in your relationship. You know that it’s not perfect, but you also know that things don’t have to be perfect to make you happy. You will also be able to enjoy peace and harmony in your life. You will find yourself working extra hard to keep the peace and serenity, and you will be influencing other people to do the same. This will be your opportunity to employ magic in your relationship. Love and romance need not be so plain and predictable. Sometimes you just need to have fun and get creative to make it more magical!

With the help of your Cluster-Crystal, you will also be able to see behind facades. You will see the truth, and you will uncover secrets. You will be opening the door to the truth.Since 2012, we have rapidly become the go-to destination for those searching for expert insights and information on crystal properties and meanings. Our collection of expert articles, media, and insights continue to grow, as we strive to bring the latest and most valuable information to our readers.

Cluster-Crystal will bring strong and welcome Earth fengshui to any space, so it’s best to put them in a place strengthened or governed by Earth element.It also acts as an absorbent for all the negative energy around and can, therefore, be used to protect the soul from being inflicted by negative vibrations.

They are mainly used for purposes of emotional healing and their powers can help one reach out to the spirit world and call on their guardian angels for assistance.In combination with Druzy Crystal, Cluster-Crystal will radiate positive energy in a room, and this can be used to absorb the negative energies present.It not only absorbs the negative energies in your surroundings but will also make you more receptive to the positive ones and instill the positivity of the environment within yourself.

If you wish to experience lucid dreaming, you can always put a Cluster-Crystal in your bedroom or near your bed. It will give you deep and restful sleep, and you will remember your dreams very vividly upon waking up.You will also be harnessing your personal power, and your motivation will be none other than love! You will be demonstrating your personal strength, but you will be willing to make sacrifices in the name of love.

You will also experience a different kind of vitality and physical well-being. You will be in the pink of health, and your radiance will shine from within.Cluster-Crystal can provide powerful healing on a physical level. It can help you overcome fatigue or lethargy. It will make you feel more energetic and physically active.

Depending on what kind of stone you choose, your crystal cluster can uplift your self-image, your self-confidence, your ability to put forth a persuasive argument in business, and more.

Cluster Crystal is a channel that transfers the support and assistance of your guardian angels to you and will make you more well-grounded so that you can easily welcome this guidance from the outside world.CrystalsAndJewelry.com has been designed to be the definitive resource for all things related to crystals. Since 2012 CrystalsAndJewelry.com has been the fastest growing collection expert articles, media and information on the powers of crystals and their meanings. So take some time and explore to find your perfect crystal and remember to like and share any content that you feel a connection with.

It heals you in a way that you can start looking at yourself in a more positive light and recognize yourself for all your great qualities, not just for your flaws.

It will absorb and neutralize the negative vibrations in your environment. You will be more receptive to these vibrations, but you will only work with the positive energies.

Another great crystal of clusters is our Pyrite Crystal. This crystal is on the smaller side, but it still works to attract an abundance of positive energy you need to succeed. Simply place this cluster at your desk or your office, and allow it to attract the success and wealth you desire.

Our Amethyst Cluster is a small yet mighty crystal that can enhance your well-being in ways you didn’t think were possible. Place it near your bed to get a good night’s sleep or near your desk to help bolster your decision-making process while you’re working. You’ll be impressed with its ability to uplift your spirits.

To use a cluster of crystals for meditation practices, lay the stone in front of your feet, flat on the ground next to you, or on top of your body. Understanding the types of crystal clusters and their meanings will help you better align the crystal with your chakra while meditating.Every cluster of crystals has a different meaning and can help you feel closer to your true self. When shopping for one to add to your living space, you may consider a large crystal cluster, like our Grape Agate Crystal. This cluster will provide protection and balance. If you place it somewhere where you’ll see it every day, it will help cleanse your aura of any unwanted negative energy. Adding this crystal to your living area will allow the crystal to purify your soul and provide you with a clear mind.Another crowd favorite is a quartz crystal cluster. These come in a wide variety of shapes, colors, and sizes. They are great for manifestation and can help you rebalance the energies within yourself and the spaces you live in. Our Columbian Quartz Cluster has an awe-inspiring level of clarity that can help you set your intentions and find a clear path toward success. Bringing this cluster of crystals into your life will help you realign your goals and create a clear life path for yourself. Darkness and negativity can weigh your spirit down, but a quartz crystal cluster will help guide you to the truth and break the illusion of darkness. There is a cluster of crystals out there for you, waiting to help you realign your mind, body, and spirit. If you aren’t sure which one is right for you, allow your soul to guide you. You may feel an immense attraction to a certain cluster. This may be your body longing for a particular crystal you’re missing from your life that can help you get closer to your intentions.

An Amethyst Crystal Cluster is among the most popular clusters to have in your life. They have a rich, gorgeous purple color that complements the energies it radiates. Add one to your bedroom, living room, or office to experience the positive energy firsthand. The crystal will help promote spiritual growth and allow you to rebalance your soul and find inner peace.Without these technologies, things like personalized recommendations, your account preferences, or localisation may not work correctly. Find out more in our Cookies & Similar Technologies Policy.

In order to give you the best experience, we use cookies and similar technologies for performance, analytics, personalization, advertising, and to help our site function. Want to know more? Read our Cookie Policy. You can change your preferences any time in your Privacy Settings.Some of the technologies we use are necessary for critical functions like security and site integrity, account authentication, security and privacy preferences, internal site usage and maintenance data, and to make the site work correctly for browsing and transactions.

Keep collections to yourself or inspire other shoppers! Keep in mind that anyone can view public collections—they may also appear in recommendations and other places. View Etsy’s Privacy PolicyTo enable personalized advertising (like interest-based ads), we may share your data with our marketing and advertising partners using cookies and other technologies. Those partners may have their own information they’ve collected about you. Turning off the personalized advertising setting won’t stop you from seeing Etsy ads, but it may make the ads you see less relevant or more repetitive.

Personalized advertising may be considered a “sale” or “sharing” of information under California and other state privacy laws, and you may have a right to opt out. Turning off personalized advertising allows you to exercise your right to opt out. Learn more in our Privacy Policy., Help Center, and Cookies & Similar Technologies Policy.Once you’ve gained clarity on your intentions, use a Clear Quartz Cluster to program your mind with your intention. When you are completely focused on what you want and direct your full energy and attention to it, you can get results much faster. Not only does a Clear Quartz Cluster help you get crystal clear on your goals, but it also helps to amplify your intention. By magnifying your intention, the Clear Quartz meaning aids in strengthening your ability to make your intention a reality. This makes a Clear Quartz Cluster a very powerful crystal for manifestation.

One of the best crystals for setting intentions, Clear Quartz helps you get clear on your goals and then helps you bring them to fruition. To work with Clear Quartz properties, first start by identifying your intention. This crystal cluster clears your mind to help you uncover what you truly want.If you are drawn to a Clear Quartz Cluster, you are ready to supercharge your intention setting practice. Charge your Clear Quartz Cluster with your intention to bring it to life.Because of their energy amplifying powers, Clear Quartz crystals are also some of the best crystals to clear and clean the energy of a room and the energy of other crystals. A Clear Quartz Cluster helps to remove all energy blockages and negative energy to purify the energy of the space. You can also use a Clear Quartz crystal cluster to cleanse the energy of another crystal by placing it with your other stones overnight.Dr. Joel E. Arem has more than 60 years of experience in the world of gems and minerals. After obtaining his Ph.D. in Mineralogy from Harvard University, he has published numerous books that are still among the most widely used references and guidebooks on crystals, gems and minerals in the world. The name quartz comes from the Greek, “krystallos,” meaning ice. Amethyst also comes from a Greek word. “Amethystos,” meaning “not drunk.” It was believed one could drink all night and remain sober if they had an amethyst in their mouth. Citrine is from the French, “citrin,” meaning yellow. Hexagonal (R) (trigonal). Occurs in a wide variety of crystal forms, up to large size; also as crystalline masses, cryptocrystalline, granular, in veins and stringers. Cryptocrystalline quartz varieties are colored chiefly by mineral impurities in the growth environment, including oxides of Fe, Mn, Ti, Cr, Ni, and other elements. They form either as gelatinous masses that slowly dehydrate and crystallize or by deposition from slowly percolating ground waters, depositing silica over a long period of time. This latter type of deposition results in banding that is seen in certain types of agate. Deposition within a spherical cavity, such as a gas pocket in basalt or other volcanic rock, results in concentric banding also seen in agates. Citrine is the yellow to orange variety of quartz. These are the colors traditionally associated with topaz, and they are still confused by many. Its color ranges from a light lemon yellow, to a rich orange. “Madeira” citrine is a strong orange color, with red flashes. It is created by heat treating citrine with the proper iron content and demands the highest price.Quartz grows in primarily in pegmatites, but is hydrothermal grown in laboratories. Quartz grows very large, with cut gems in the thousands of carats. The exceptions are amethyst, which rarely produces a clean gem of 100 carats, and rose quartz, which rarely exceeds 30 carats in a transparent gem. Translucent specimens can weigh several pounds.

Synthetic quartz is identified “breadcrumbs” or by a lack of natural inclusions. May also show 2-phase spicule inclusions or a seed. Cobalt blue, greenish yellow and grayish green, not found in nature.Aggregates to very large. Rock crystal, citrine, and smoky quartz to thousands of carats. Amethyst rare in large sizes, but go to 1000+ carats. Rose quartz, to 30 carats.

The late Donald Clark, CSM founded the International Gem Society in 1998. Donald started in the gem and jewelry industry in 1976. He received his formal gemology training from the Gemological Institute of America (GIA) and the American Society of Gemcutters (ASG). The letters “CSM” after his name stood for Certified Supreme Master Gemcutter, a designation of Wykoff’s ASG which has often been referred to as the doctorate of gem cutting. The American Society of Gemcutters only had 54 people reach this level. Along with dozens of articles for leading trade magazines, Donald authored the book “Modern Faceting, the Easy Way.”Amethyst ranges from a light, pinkish violet to an opaque purple. The lightest shades are called “Rose de France.” While currently out of vogue, they have traditionally been very fashionable. Today, the variety most in demand is “Siberian.” That does not refer to its origin, but to dark purple coloring, with flashes of red or blue.

Relatively new on the market is ametrine, with zones of both purple and yellow. The colors only reach a medium level of saturation and are never very dark. Cutting the material so both color show is sometimes a challenge for the lapidary. However, a well cut, bi-colored gem is a real delight. Ametrine is only found in Bolivia.

Crystalline quartz is separated here from cryptocrystalline or microcrystalline quartz. The crystalline varieties are those that occur in distinct, visible crystals: amethyst, smoky quartz, citrine, rose quartz, and milky quartz. The color origins in crystalline quartz are complex and are only now beginning to be fully understood.

Get started with the International Gem Society’s free guide to gemstone identification. Join our weekly newsletter & get a free copy of the Gem ID Checklist!Varies widely due to traces of impurities, usually in the cryptocrystalline varieties. Fluorescent colors include browns, greens, white, orange (LW, SW). Some material shows phosphorescence. X-rays produce faint blue glow in rose quartz. Most varieties inert. Amethyst, inert to weak blue in SW. Aventurine, inert to weak, grayish green or reddish, LW and SW. Rose quartz, inert to weak, purple, SW only.

Co-founder and President of numerous organizations, Dr. Arem has enjoyed a lifelong career in mineralogy and gemology. He has been a Smithsonian scientist and Curator, a consultant to many well-known companies and institutions, and a prolific author and speaker. Although his main activities have been as a gem cutter and dealer, his focus has always been education. joelarem.com Amethyst, weak to moderate, purple and reddish purple. Citrine, very weak, different shades of yellow or orange. Dumortierite quartz, strong blue/violet. Rock crystal and aggregates, none. Rose quartz, weak to strong, different shades of pink. Smoky quartz, dark stones, weak brown/reddish brown. Light stones, weak, light and darker yellowish brown. Barbara Smigel is a GIA certified gemologist, facetor, jewelry designer, gem dealer, gemology instructor and creator of the well-regarded educational websites acstones.com and bwsmigel.info.

Citrine, Amethyst, Chalcedony, Rose Quartz, Smoky Quartz, Rock Crystal, Ametrine, Aqua Aura, Rutilated Quartz, Tiger’s Eye, Prasiolite, Iris Quartz, Mystic Quartz, Prase, Tourmalinated Quartz, QuartziteAn overview on Quartz Jewelry and Gemstones. Covers details and essential information on the physical properties and characteristics of a Quartz mineral.

Tyndall scattering is one of the rarest phenomena in gemology, but it is relatively common in Madagascar rose quartz. Tyndall scattering is where light is dispersed by fine particles and produces a blue color. This is the same as what happens when sunlight hits dust particles in the air and why the is sky blue. In rose quartz, you see both pink and blue in the same tone.The stable form of quartz below a temperature of 573°C is known as a-quartz. Between 573° and 870° another silica mineral, tridymite, forms. At 1470°, tridymite undergoes a structural rearrangement, resulting in the appearance of a new silica type called cristobalite, which is isometric. Finally, at 1710°, cristobalite melts to an extremely viscous liquid. If this liquid is chilled quickly, a glass forms (silica glass) that has many useful properties but no regular internal structure. Quartz is one of the most common minerals on earth. (See The X Factor.) It is well loved as amethyst, citrine, rose, and smoky quartz. There are many other natural varieties, plus synthetic quartz that comes in every color of the rainbow. The colored, crystalline quartz varieties generally occur in pegmatitcs and veins, having been deposited from water solutions over a long period of time. As a result of slow crystal growth, many such crystals achieve great internal perfection and yield enormous pieces of faceting rough. The only color varieties that do not form such large crystals are amethyst and rose quartz.Rose quartz receives its coloring fromfibrous inclusions of a mineral similar to dumortierite. It is always a light to medium pink, but sometimes is influenced by amethyst and picks up a violet shade. Until the 1980s, when a new deposit was discovered in Madagascar, it was never found completely transparent. Indeed, one of its best uses is for star cabs and spheres.

Irradiation (occasional), dyeing (common), heat treatment for colored varieties only (occasional), coating (occasional), quench crackling for iridescence (occasional, weakens stone).Most varieties, none. Aventurine, broad bands at 648 and 682 nm, other lines may be present. Blue synthetic quartz, distinct bands at 640 and 650, weaker bands at 490, 500, 550 nm.