Sphene
div Sphene is the gemstone name of the mineral Titanite . Sphene is known for its exc... More
Sphene is the gemstone name of the mineral Titanite. Sphene is known for its exceptional dispersion, resulting in gemstones that show brilliant fire. The dispersion of Sphene exceeds even that of Diamond. However, the relatively low hardness of Sphene inhibits its use as a mainstream gemstone.
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Sphene IN THE ROUGH PHOTOS
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Spinel
Spinel is most famous for its deep red variety that closely resembles Ruby . These tw... More
Spinel is most famous for its deep red variety that closely resembles Ruby. These two gemstones can be very difficult to
distinguish. Until the late 19th century, there was no distinction made
between Ruby and red Spinel, as they look identical and are found in the
same localities. Many famous old "Rubies" were discovered to be in
fact Spinel. For example, the enormous "Ruby" that forms the centerpiece
of the royal crown of England (the Black Prince's Ruby) was actually
determined to be Spinel. Hide
Spinel IN THE ROUGH PHOTOS
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Spodumene
Spodumene is a mineral that contains two important gem varieties pink Kunzite and gre... More
Spodumene is a mineral that contains two important gem varieties: pink Kunzite and green Hiddenite. Both of these gemstone varieties have their own dedicated page. In the gem trade, the term Spodumene is generally used to include only the yellow, brownish, light greenish, and colorless forms of Spodumene. Hide
Spodumene GEMSTONE PHOTOS
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Images of Kunzite and Hiddenite are listed separately on their own dedicated page.
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Spodumene IN THE ROUGH PHOTOS
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Images of Kunzite and Hiddenite are listed separately on their own dedicated page.
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Sunstone
Sunstone is an interesting feldspar gemstone with a glittery appearance and usually a... More
Sunstone is an interesting feldspar gemstone with a glittery appearance and usually an orange or reddish color, hence its name. The glitter effect is caused by inclusions of the mineral Hematite, or sometimes also Goethite or Pyrite (and in one rare instance, Copper). The term used to describe the glittery effect exhibited on Sunstone is aventurescence. Hide
Sunstone IN THE ROUGH PHOTOS
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Tanzanite
i i Tanzanite is the blue to violet gem variety of the mineral Zoisite . Since its re... More
Tanzanite is the blue to violet gem variety of the mineral Zoisite. Since its relatively recent discovery in 1967, it has become a mainstream and popular gemstone, and is used extensively in jewelry. To date, Tanzanite is found only in the Arusha region of the African country of Tanzania, and it was named after its country of origin. Hide
Tanzanite GEMSTONE PHOTOS
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Tanzanite IN THE ROUGH PHOTOS
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Thulite
Thulite is the pink to reddish variety of the mineral Zoisite . It is an opaque stone... More
Thulite is the pink to reddish variety of the mineral Zoisite. It is an opaque stone composed of dense crystals, and is used as a minor gemstone. Hide
Thulite IN THE ROUGH PHOTOS
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Tiger's Eye
Tiger s Eye, a popular yet inexpensive gemstone, is a pseudomorph of compact Quartz a... More
Tiger's Eye, a popular yet inexpensive gemstone, is a pseudomorph of compact Quartz after the fibrous mineral Crocidolite. It is formed when the Quartz takes over and dissolves the Crocodolite, leaving the Quartz in a finely fibrous and chatoyant form. When polished, it's silky luster creates a beautiful chatoyant effect of moving layers of brown and yellow lines and waves. Hide
Tiger's Eye GEMSTONE PHOTOS
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Tiger's Eye IN THE ROUGH PHOTOS
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Topaz
Topaz makes an ideal gem. A good hardness and desirable colors, combined with a relat... More
Topaz makes an ideal gem. A good hardness and desirable colors, combined with a relative abundance and availability makes it one the most popular gemstones. The most valuable colors of Topaz are the golden orange-yellow type, called Imperial Topaz, and the dark pinkish-red and orange-red colors. Value increases with a deepness of color in orange and reddish hues. The most commonly used colors of Topaz in jewelry are the blue types. It was not until this past century that blue Topaz became widespread on the gem market, since virtually all blue gem Topaz is irradiated and heat treated. Hide
Topaz IN THE ROUGH PHOTOS
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Tourmaline
Tourmaline is the most colorful of all gemstones. It occurs in all colors, but pink, ... More
Tourmaline is the most colorful of all gemstones. It occurs in all colors, but pink, red, green, blue and multicolored are its most well-known gem colors. Scientifically, tourmaline is not a single mineral, but a group of minerals related in their physical and chemical properties. The mineral Elbaite is the member of the Tourmaline group that is responsible for almost all the gem varieties. Three other members of the group - Schorl, Dravite and Liddicoatite, are seldom used as gemstones. Hide
Tourmaline GEMSTONE PHOTOS
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Tourmaline IN THE ROUGH PHOTOS
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Tourmaline JEWELRY PHOTOS
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Tsavorite
Tsavorite is a trade name for the emerald green variety of Grossular Garnet that orig... More
Tsavorite is a trade name for the emerald-green variety of Grossular Garnet that originates in Africa. Tsavorite has become one of the most popular and expensive Garnets, due to its rarity combined with effective marketing tactics. This gemstone was first discovered in Tanzania in 1967. It was subsequently found in the same geological formation across the border in Kenya in 1970 near Tsavo National Park, a wildlife preserve in the African Serengeti, and given its name after the national park. Tsavorite was named by both Campbell Bridges, the discoverer of Tsavorite, and by Henry Platt, the president of Tiffany & Co. (one of the world's largest jewelry companies). Hide
Tsavorite GEMSTONE PHOTOS
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Tsavorite IN THE ROUGH PHOTOS
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