Pearl Education

A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z

Quadrula metanerva: Natural pearl producing freshwater mollusk found in the United States, otherwise known as the monkeyface or knobbed rock shell.

Quadrula nodulata: Natural pearl producing freshwater mollusk found in the United States, otherwise known as the wartyback, two-horned pocketbook, pimpleback, winged pimpleback, nodule and winged orb shell.

Quadrula pustulosa: Natural pearl...

A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z

radial structure: Calcite or aragonite crystals of a pearl's prismatic layer are arranged in a pattern, so they radiate like rays of sunlight from a central core. In a cross-section view, the crystals stand on end rather than lie flat as in the nacre layer.

rainbow pearl: From Pteria sterna but may exhibit colors similar to those of pearls from the black-lip mollusk (Pinctada...

A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z

saltwater pearl: Natural or cultured pearl produced by a saltwater mollusk.

sand pearls: One of four Saxony quality factors used to describe natural German river pearls; sand pearls are of low quality. Also see: light pearls (highest quality), half-light pearls (high quality), and rotten pearls (lowest quality).

sautoir: Pearl strand longer than 36 inches (90 cm).

Saxon pearl necklace...

A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z

Tahitian cultured pearl: Produced by a black-lip mollusk (Pinctada margaritifera) in French Polynesia.

Tahiti cultured pearl: Produced by a black-lip mollusk (Pinctada margaritifera) in French Polynesia.

Tahiti Black Pearl Promotion Association: Founded in 1994 to promote Tahitian cultured pearls in the United States.

Takara pearl: Imitation pearl made with a mother-of-pearl nucleus...

A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z

Unio: Genus in the Unionidae freshwater mussel family. Several species in the genus produce nacreous pearls.

Underwater platform: Used in French Polynesia as a temporary care station from which mollusks are suspended after implantation of a bead nucleus and donor-mollusk tissue piece.

Uroko: Japanese term for scaly spots on akoya cultured pearls.

A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z

Venezuelan necklace: Legendary strand of pearls owned by Spain's Queen Isabella.

Venus pearls: Natural non-nacreous pearls from the Veneridae family of saltwater mollusks that are often called "Venus clams".

virgin pearl: Historical term for an undrilled or freshly harvested pearl.

Vologne pearl: Natural freshwater pearl from the French province of Lorraine, specifically from the Vologne...