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Small hemispherical pearls with one flat side. Blister pearls occur when the pearl is formed between the mussel tissue and the hard outer mollusk shells. Sometimes blister pearl are sliced from a bump in the shell Nacre.
Resources and Citations
- Jack Odgen, Jewellery of the Ancient World, Rizzoli International Publications Inc., New York City, 1982
- Encyclopedia Britannica, http://www.britannica.com Comment: "Pearl." Accessed 13 May 2004.