Cultured pearl Cultured pearl A cultured pearl is a pearl created by an oyster farmer under controlled conditions. Cultured pearls can be farmed using two very different groups of bivalve mollusk: the freshwater river mussels, and the saltwater pearl oysters. A pearl is formed when the mantle tissue is injured by a parasite, an attack of a fish or another event that damages the external fragile rim of the shell of a mollusk shell bivalve or gastropod. In response, the mantle tissue of the mollusk secretes nacre into the pearl sac, a cyst that forms during the healing process. Chemically speaking, this
The Pearl of Death and kills him, after which Holmes kills the Creeper, before the police finally arrive. Holmes smashes the final bust and recovers the pearl "with the blood of five more victims on it". Universal Studios attempted to capitalise on Rondo Hatton's effective portrayal of the Hoxton Creeper, casting him in two more (unrelated) films as "the Creeper": "House of Horrors" (filmed in 1945, but not released until 1946, after Hatton's death) and "The Brute Man" (1946, also released posthumously). The Pearl of Death The Pearl of Death is a 1944 Sherlock Holmes film starring Basil Rathbone as Holmes and Nigel Bruce