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Gemstone Cabochons K - L |
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Kyanite Cabochons |
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Kyanite (aluminum silicate) is a blue green or colorless mineral which is found in metamorphic rocks. Used commercially in ceramics and as a gemstone. Primary suppliers are in the Ural Mountains, Italy, Switzerland, and the Eastern U.S. Kyanite crystals have a distinctive shape of and form in elongated columns. The name Kyanite comes from the Greek kyanos, which means “blue.” While some specimens have a rich blue color most samples of Kyanite are transparent, with a pearly luster. The mineral may also be streaked with white or other colors, depending on impurities. |
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 Item 1749 |
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Labradorite Cabochons |
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Labradorite is a unique and fascinating mineral. At first glance it may appear to be dark and unremarkable until the colorful shiller glows on the surface. Labradorite can produce a colorful play of light across cleavage planes and in sliced sections called labradorescence. The usually intense colors range from the typical blues and violets through greens, yellows and oranges. Some rare specimens display all these colors simultaneously. Light is refracted through layers within the crystal producing the shiller, which is only seen if viewed from the proper angle in the proper light. Click on image for details |
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 Item 1998 |
 Item 1999 |
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Lapis Lazuli Cabochons |
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Lapis lazuli is prized for it’s intense blue color. It has been mined in Afghanistan for over 6,000 years. Formed from more than one mineral with the main component of lazurite. Most lapis lazuli also contains white calcite, blue sodalite and pyrite. The finest color is intense blue, lightly dusted with small flecks of golden pyrite. Patches of pyrite help in identifying the stone as genuine and do not detract from its value. In addition to the Afghan deposits, lapis has been extracted for years in the Andes, where the deep blue stones rival the quality of those from Afghanistan. Lesser sources include the Russia, Siberia, Angola, Burma, Pakistan, California and Colorado, Canada and India. Click on image for details |
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Item 1915 |
Item 1916 |
Item 1906 |
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Llanolite / Llanite Cabochons |
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Llanite, also known as Llanolite, is found in Llano, Texas. This is a dark brownish stone with rust color patches and spots of opal like iridescent blue. The red and blue spots of feldspar and quartz are contained in a matrix of quartz, apatite, zircon and other minerals Click on image for details |
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