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Glittering Stones >> Glittering
Stones Glossary >> S
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- Sapphire:
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The sky is just like gigantic blue Sapphire mineral
into which the earth is embedded - this faith was in fact cherished
in ancient times. And, in fact, it exist an improved image to explain
the beauty of its immaculate.
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- Spinel:
- Spinel is one of the groups of minerals, which crystallize
in the isometric system with an octahedral habit, and whose substance
compositions are also analogous.
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- Silky:
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The luster of a gemstone having a smooth, gleaming
exterior similar to silk or long silky fur. Tiger's eye exhibits a
glossy luster.
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- Sterling Silver:
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Sterling is silver with a excellence of 925 parts
per thousand or 92.5% silver and 75 parts per thousand or 7.5% copper.
Copper is additional to the alloy to increase the silver's hardness.
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- Sugilite:
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Sugilite (also known as luvulite) is a reasonably
rare pink to purple cyclosilicate mineral with the complex chemical
formula: KNa2 (Fe, Mn, Al) 2Li3Si12O30. Sugilite crystallizes in the
hexagonal arrangement with the prismatic crystals. It has a Mohs rigidity
of 5.5 to 7.5 and a specific gravity of 2.75 - 2.85.
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