Mineral watch crystal

A watch glass made of mineral that is harder and more durable than glass or acrylic. Sapphire crystals are used in high-end watches.

November 4, 2009  Tags: crystals, durable  Posted in: Glossary   No Comments

Luster

The deep inner glow that makes pearls uniquely beautiful. Luster is created by tiny crystals of nacre built up over the irritant. Natural pearls tend to have thicker nacre than cultured pearls, hence deeper luster.

November 4, 2009  Tags: crystals, deep  Posted in: Uncategorized   No Comments

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