Tag: iridescence

A Writers Guide to Pearls

A pearl is a hard mass that’s created inside the soft tissue of living bivalve mollusk. It’s made of concentric layers of calcium carbonate in minute crystalline form. Pearls can be made by any shelled mollusk, but the majority of these pearls are not valued as gemstones. Nacreous pearls are the best-known, most-commercially significant pearls. The pearl’s […]

H.R. Sinclair © 2016
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