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Fine Jewelry University Articles matching: “14k white gold filled ring”

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Fine Jewelry University

  1. A group of alexandrite jewelyr and loose gems shown in different light to demonstrate color change

    Gem in the Spotlight: Alexandrite

    FJU Category: Gemstones | Tags: Colored Gemstones, Folklore, Gem Spotlight, Gemology, Rarity

    … component, the stone will appear redder. Alexandrite has a refractive index of 1.746-1.755 with an average birefringence of .010. It has a specific gravity of 3.73 and a Mohs hardness of 8.5. Because of its high hardness, alexandrite is … alexandrite’s tremendous value and rarity, it is recommended to be worn carefully or put in jewelry such as earrings or pendants that are less prone to impacts than rings, for example. Alexandrite isn’t the only stone to display color-…

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