Adamantine - "Diamond-like luster and hardness," derived from the Greek word adamas (invincible) for diamonds. Adularescence - The billowing shimmer of light floating across the surface of a moonstone. Agate - A quartz crystal and a sub-variety of chalcedony located in a wide assortment of pale colors including green, yellow, red, reddish-brown, white and bluish white. Assessing a 6.5-7 on Mohs' scale of hardness, agate has a waxy or dull luster. Located in parts of southern Brazil, northern Uruguay, Australia, China, India, the Caucasus, Madagascar, Mexico, Mongolia, Namibia, Wyoming, and Montana. Alexandrite - A highly prized variety of chrysoberyl that looks grassy green in daylight, and in tungsten light seems raspberry red. On Mohs' scale of hardness, alexandrite is 8.5. It's a strong vitreous luster and can be seen at Sri Lanka, Zimbabwe, and Brazil. Almandite/Almandine - A variety of garnet generally found at a violet red hue. Measuring 7.5 on Mohs' scale of hardness, almandite has a vitreous luster and can be located in Brazil, India, Madagascar, Sri Lanka and the United States. Amber - A fossilized, organic combination of pine resins, acids and volatile oils which comes in the tree sap of the pine tree. Predominantly found in yellow and brown colors, amber measures 2-2.5 on Mohs' scale of hardness and has a vitreous luster and a resinous sheen when polished. Amber is found in Russia, Sicily/Italy, Rumania, Burma, China, the Dominican Republic, Japan, Canada, Mexico, Alaska and New Jersey. Amethyst - The most highly valued gemstone in the quartz family and discovered in a variety of colors from purple to pale red-violet. On Mohs' scale of hardness, amethyst is 7 and it's located in Brazil, Madagascar, Zambia, Uruguay, Burma, India, Canada, Mexico, Namibia, Russia, Sri Lanka and Arizona Here is a blog for tool help Ametrine - A quartz crystal which contains amethyst and citrine measuring 7 on Moh's scale of hardness. Ametrine is primarily found in Bolivia. Amorphous - Amorphous is an adjective meaning shapeless or lacking crystal structure (like Amber). Andalusite - A naturally occurring pleochroic gemstone. Since the stone is rotated, different colours and different intensities of colors can appear such as olive green, rich red brown or grayish green. It's a vitreous or mat luster and primary sources include Australia, Brazil, Canada, Russia, Spain, Sri Lanka and the United States. Andradite - A species of diamonds inside the garnet family which includes several important gem varieties such as demantoid, melanite and topazolite. On Mohs' scale of hardness, it's 3.7 -- 4.1. Apatite - A naturally occurring beautiful gemstone, while known for its green hues, apatite can actually be found in a vast array of colors from colorless to pink, yellow, blue and purple. On Mohs' scale of hardness, apatite is a soft 5. It has a vitreous luster and is found in Burma, Brazil, India, Kenya, Madagascar, Mexico, Norway, Sri Lanka, South Africa and the United States. Aquamarine - A part of the beryl family, is known for its clear sky-blue colour but is also found in a variety of dark blues to blue-greens. Measuring a 7.5-8 on Mohs' scale of hardness, aquamarine
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Pyrope - A wide variety of garnet that normally exhibits a blood-red colour but may also be tinged with purple or yellow. It has a vitreous luster and primary sources include Burma, China, Madagascar, Sri Lanka, South Africa, Tanzania, and the USA.
Quartz - Some of the most frequent stone families and are available all over the world. Quartz comprises many distinct groups of stone from crystalline quartz (crystals viewable by the naked eye) and also crypto-crystalline (microscopic crystals). Crystalline quartz comprises amethyst, aventurine, rock crystalclear, blue quartz, citrine, hawk's eye, prasiolite, quartz cat's eye, smoky quartz, rose quartz, and tiger's eye. Crypto-crystalline quartz is also called chalcedony and contains agate, bloodstone, carnelian, chyrsoprase, jasper, moss agate, onyx and sard. Rhodolite - A range of garnet that shows a beautiful rhododendron reddish color with a playful sheen. It has a vitreous luster and primary sources include Burma, China, Madagascar, Sri Lanka, South Africa, Tanzania, and the USA. Rhodonite - This decorative stone is translucent to opaque with an increased red shade. Often it looks pink marble veined with black. Rock Crystal - A colorless water-clear kind of rock, rock crystal was considered by some early Greeks to become ice which had hardened over time to rock. Rubellite - A gemstone range of this Tourmaline group. Valued for its crimson colour, it displays a variety of colour from pink to red, sometimes with a purple tint. It has a vitreous luster on crystal surfaces along with a greasy sheen on cracks. Ruby - A gemstone at the Corundum family which shows a selection of reddish colours, and the most desirable color is pigeon's blood (pure red with a hint of blue). It's a powerful luster such as diamonds and resources comprise Burma, Thailand, Sri Lanka, Tanzania, Afghanistan, Cambodia, Kenya, Madagascar, and Vietnam. Rutilated Quartz - Quartz containing needle-like inclusions of rutile sticks is known as rutilated quartz. Sapphire - A gemstone at the Corundum family famous for its amazing "cornflower blue" colour. It's a powerful luster such as diamonds and resources comprise Australia, Burma, Sri Lanka, Thailand, Montana, Brazil, Cambodia, China, Kenya, Madagascar, Malawi, Nigeria, Pakistan, Rwanda, Tanzania, Vietnam and Zimbabwe. Scapolite - A clearly fibrous gemstone generally found in yellow, white, pink and purple colors. It has a vitreous luster and resources comprise Burma, Brazil, Canada, Madagascar and Tanzania. Single Cut Diamond - This contrasts to the modern brilliant cut arose in the mid 1600s. Moving nearer to a round shape, the trimming is composed of 8 facets surrounding the table along with 8 facets under the girdle. It's a total of 18 facets. The only cut can be located on side stones or even smaller rocks. Smoky Quartz - A range of the Quartz family that shows brown to black and smoky grey colours. On Mohs' scale of hardness, smoky quartz is 7. Sodalite - A part of Lapis Lazuli, decorative sodalite includes a rich blue colour and is sometimes mistaken for lapis. Spessartite - A wide range of garnet in which the colour ranges from a yellowish-orange into an extreme aurora crimson to a deep-orangey colour. It has a vitreous luster and primary sources include Burma, China, Madagascar, Sri Lanka, South Africa, Tanzania, and the USA. Sphene - A vibrant transparent gemstone that exhibits a selection of colors from yellow to brown to green and even red. It's an adamantine luster and resources comprise Burma, Brazil, Mexico, Austria, Sri Lanka and the USA. Spinel - The classification of a huge group of associated minerals which has a little set of bead quality stones. Spinel exhibits a vast array of colors such as red, orange, pink, yellow, brown, blue, purple, purple, black and green. On Mohs' scale of hardness, spinel is still 8. Star Sapphire - Sapphires that display a pure asterism and has to be cut cabochon to be able to show this special effect. Sunstone - called aventurine feldspar, is a gemstone at the Feldspar group. It normally includes a rich golden or blue-green colour with sparkling brown and red (and sometimes blue or green) inclusions. On Mohs' scale of hardness, it's 6-6.5. Sources include India, Canada, Madagascar, Norway, Russia, and America. Tahitian Pearls - Setting the standard for black pearls, Tahitian pearls are a few of the very well-known pearls on the planet. They've a gentle, velvety luster and frequently display a strong iridescence. Tanzanite - A range of zoisite which has naturally occurring colors of blue, yellow, green, pink, brown and khaki but virtually all bead quality crystals have been heat treated to make the most highly appreciated colors of sapphire blue, amethyst and blue purple. The prime source of the planet's tanzanite is in Tanzania. Tiger's Eye - Referring to a golden-brown quartz cabochon that reflects the floating drama of light phenomena called chatoyancy and asterism; consequently, making the rock's appearance very similar to a tiger's attention. Topaz - A bead found in vibrant colors like orange, yellow, red-brown, light to dark blue, pink-red, crimson, purple, light green, colorless and in odd colors like mystic, sea, glacier, patriot, canary, champagne, orchid, sunrise, teal and kiwi. On Mohs' scale of hardness, it's 8. Topaz has a vitreous luster and resources include Brazil, Afghanistan, Australia, Burma, China, Japan, Madagascar, Mexico, Namibia, Nigeria, Pakistan, Russia, Zimbabwe, Sri Lanka and the USA. Tourmaline - An intriguing mineral which could actually exhibit at least two colours in 1 crystal. It owns one of the widest color ranges, replicating every imaginable color in the world. It's vitreous on crystal surfaces and fatty on cracks. Sources include Brazil, Afghanistan, Australia, Burma, India, Madagascar, Malawi, Mozambique, Namibia, Nepal, Nigeria, Pakistan, Russia, Zambia, Zimbabwe, Sri Lanka, Tanzania, the USA, Zaire, Elba, and Switzerland. Tsavorite Garnet - A gemstone inside the Garnet family which shows a green to emerald green colour. It has a vitreous luster and resources comprise Kenya and Tanzania. Turquoise - A translucent to opaque gemstone that shows a selection of green and blue colours from sky-blue to blue-green to apple-green. On Mohs' scale of hardness, turquoise is 5-6 and can be located in Iran, Afghanistan, Argentina, Australia, Brazil, China, Israel, Mexico, Tanzania, and the USA. Zircon - A lovely gemstone with a high refractive index and robust dispersion and displays a selection of colors such as brown, yellow, orange, crimson, purple, blue, green and colorless. On Mohs' scale of hardness, it's 6.5-7. It has a vitreous to brilliant luster and resources comprise Burma, Cambodia, Sri Lanka, Thailand, Australia, Brazil, Korea, Madagascar, Mozambique, Nigeria, Tanzania and Vietnam. |
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