Pinctada
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Pinctada is a genus of saltwater oysters, marine bivalve mollusks in the family Pteriidae. These pearl oysters have a strong inner shell layer composed of nacre, also known as "mother of pearl".
Opening and extracting pearls from farmed pearl oysters
Cultivated pearl oyster (from Japan Shima, Mie)
Melo melo
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Melo melo, common name the Indian volute or bailer shell, is a very large edible sea snail, a marine gastropod mollusc in the family Volutidae, the volutes.
A shell of Melo melo.
A melo pearl, diamond and platinum necklace.
A melo pearl, diamond and platinum ring.