Agate - Wikipedia, The Free Encyclopedia
Such stones are known as banded agate, riband agate and striped agate. In the formation of an ordinary agate, Other natural objects. Shell jewelry; Terms: Carat (mass) Carat (purity) Finding; Millesimal fineness; Related topics: Body piercing; Fashion; ... Read Article
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The very careful choice of colored glass, under natural light, A type of murrine, that has two or more colors alternating to form concentric rings. Glass rods made by the Vetro Fond company of Mestre, Italy, ... Retrieve Doc
Emerald - Wikipedia, The Free Encyclopedia
Luminescence in ultraviolet light is considered a supplementary test when making a natural vs. synthetic determination, as many, but not all, natural emeralds are inert to ultraviolet light. Many synthetics are also UV inert. ... Read Article
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