Bluish Round Pearl from Tuamotu (Tahiti)

About Pearl

A pearl is an organic gem formed inside a mollusc, rather than a mineral crystal grown in rock. Its surface is usually made of nacre, a layered material composed mainly of microscopic aragonite plates and the protein conchiolin. This structure gives pearls their soft, deep lustre and, in fine examples, orient: gently shifting flashes of colour that seem to move beneath the surface. Pearls may be white, cream, pink, silver,…