Minerals and Metals in Ancient India v2.c43.s3.t13.19

v2.c43.s3.t13.19

Only the yellow-bodied and black-mouthed conch-shells produce pearls. Such a pearl has the dimension of a large plum, and is white as the inner surface of the coat of that shell fish. There are twenty-seven kinds of conch-shells, produced by as many stellar constellations. A conch-pearl could be white, black, yellowish, crimson blue, reddish, deep yellow, ash-coloured or pale red.