In the southern parts of West Bengal, 3962 individuals of Lamellidens marginalis were checked for the presence of pearls; 173 or 4.37% appeared to contain pearls, viz., 1 with 4 pearls, 5 with 3 pearls, 21 with 2 pearls, and 146 with 1 pearl. The pearls had weights from 0.8 to 10 mg. It is concluded that pearl fishery or culture in West Bengal may give rise to a viable industry.

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Basteria

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Nederlandse Malacologische Vereniging

Srimanta K. Raut, & Anirudha Biswas. (1989). Pearls in freshwater mussels Lamellidens marginalis in India (Bivalvia: Unionidae). Basteria, 53(4/6), 105–109.