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A type of murrine, that has two or more colors alternating to form concentric rings. Think of a many layered cased cane! A guide or template for cutting the exact design of a piece of glass. ... Retrieve Here
Sapphire - Wikipedia, The Free Encyclopedia
Sapphire (Greek: σάπφειρος; This is because genuine alexandrite is a variety of chrysoberyl: not sapphire, but an entirely different mineral. Source of color . Crystal structure of sapphire. Sapphire ring made circa 1940. ... Read Article
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