Survival Pearl- 90.35-carat Freshwater Baroque Pearl from North America-Internet Stones.COM
The 90.35-carat, natural, freshwater pearl, considered as the largest documented
baroque pearl in a snail-like formation, is believed to have originated inside a
freshwater mussel species in the Tennessee river, which was invaded by a snail
parasite.
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[Source: Geology / Mineralogy Resource-Internet Stones.COM]