Pinctada Martensii

Pinctada Martensii: a species of the genus Pinctada, a marine bivalve mollusk (oyster) frequently pearl-producing, which has numerous species (and varieties) distributed in similarly abundant areas. Pinctada Martensii or Pinctada Fucata is prospering in Japan, Korea, Hong Kong, Sri Lanka and Venezuela (Gemmological Dictionary, M. Superchi).

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