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Questions and Answers
What is the term for the crystallized form of calcium carbonate found in nacre?
What is the term for the crystallized form of calcium carbonate found in nacre?
- Nacre
- Aragonite (correct)
- Mother-of-pearl
- Conchiolin
What is the name of the mollusk that produces Akoya pearls?
What is the name of the mollusk that produces Akoya pearls?
- Pinctada fucata (correct)
- Pinctada radiata
- Pinctada margaritifera
- Pinctada maxima
What is the term for the assembly composed of a nacre dome, filler, and a mother-of-pearl backing?
What is the term for the assembly composed of a nacre dome, filler, and a mother-of-pearl backing?
- Mabé (correct)
- Bead nucleus
- Coin-bead/spherical-bead
- Mantle-tissue piece
What is the term for the natural substance produced by pearl-bearing mollusks to make pearls?
What is the term for the natural substance produced by pearl-bearing mollusks to make pearls?
What is the term for the process of cultivating pearls involving a series of distinct growth periods?
What is the term for the process of cultivating pearls involving a series of distinct growth periods?
What is the term for the pearl formed as the result of human intervention in the formation process?
What is the term for the pearl formed as the result of human intervention in the formation process?
What is the term for the organic 'glue' in nacre that holds aragonite platelets together?
What is the term for the organic 'glue' in nacre that holds aragonite platelets together?
What is the term for the pearl that forms without human assistance?
What is the term for the pearl that forms without human assistance?
What is the term for the nacreous layer inside a pearl-bearing mollusk's shell?
What is the term for the nacreous layer inside a pearl-bearing mollusk's shell?
What is the term for the bead used as the core of a cultured pearl, usually made from a freshwater mussel shell?
What is the term for the bead used as the core of a cultured pearl, usually made from a freshwater mussel shell?
What is the term for the reproductive organ that produces eggs in females and sperm in males?
What is the term for the reproductive organ that produces eggs in females and sperm in males?
What is the term for a company that prepares cultured pearls for the market?
What is the term for a company that prepares cultured pearls for the market?
What is the term for a facility where biologists breed pearl-bearing mollusks in tanks under controlled conditions?
What is the term for a facility where biologists breed pearl-bearing mollusks in tanks under controlled conditions?
What is the term for a necklace with the largest pearl in the center and progressively smaller pearls approaching the clasp?
What is the term for a necklace with the largest pearl in the center and progressively smaller pearls approaching the clasp?
What is the term for pearls that form in the body of a mollusk?
What is the term for pearls that form in the body of a mollusk?
What is the term for tissue that encloses an implanted bead nucleus and mantle-tissue piece, or the piece alone?
What is the term for tissue that encloses an implanted bead nucleus and mantle-tissue piece, or the piece alone?
What is the term for a number of similar cultured pearl strands bundled together?
What is the term for a number of similar cultured pearl strands bundled together?
What is the term for a product that results when a pearl-bearing mollusk is returned to the water after the first harvest?
What is the term for a product that results when a pearl-bearing mollusk is returned to the water after the first harvest?
What is the term for a necklace featuring pearls that are very nearly the same size?
What is the term for a necklace featuring pearls that are very nearly the same size?
What is the term for mollusks bred in laboratory tanks and grown in protected areas rather than collected as adults in the wild?
What is the term for mollusks bred in laboratory tanks and grown in protected areas rather than collected as adults in the wild?
A cultured pearl grown around a nucleus implanted under the mantle tissue inside a mollusks shell is called ....?
A cultured pearl grown around a nucleus implanted under the mantle tissue inside a mollusks shell is called ....?
Wha terms is used for the optical phenomenon created in some non-nacreous pearls when intersecting groups of crystals interact light ?
Wha terms is used for the optical phenomenon created in some non-nacreous pearls when intersecting groups of crystals interact light ?
The term used for the organ that lines the mollusk's shell encloses it s soft body, and contains the cell that form pearl sacs and secrete nacre ?
The term used for the organ that lines the mollusk's shell encloses it s soft body, and contains the cell that form pearl sacs and secrete nacre ?
What is a small square of mantle tissue cut form a donor mollusk and implanted in a host mollusk with or without a bead ...?
What is a small square of mantle tissue cut form a donor mollusk and implanted in a host mollusk with or without a bead ...?
What term is used for a pearl with a non-concentric structure of aragonite crystal resulting in different luster and appearance from nacreous pearls?
What term is used for a pearl with a non-concentric structure of aragonite crystal resulting in different luster and appearance from nacreous pearls?
What is a necklace typically composed of pearls very close to the same size strung without a clasp for wholesale marketing ?
What is a necklace typically composed of pearls very close to the same size strung without a clasp for wholesale marketing ?
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Study Notes
Pearl Formation
- Pearl is an organic gem that forms in the body of a mollusk
- Nacre is the natural substance produced by pearl-bearing mollusks to make pearls
- Aragonite is a crystallized form of calcium carbonate found in nacre
- Conchiolin is the organic "glue" in nacre that holds aragonite platelets together
Types of Pearls
- Natural pearl: forms without human assistance
- Cultured pearl: forms as the result of human intervention in the formation process
- Cultured blister pearl: grown around a nucleus implanted under the mantle tissue inside a mollusk's shell
- Non-nacreous pearl: has a non-concentric structure of aragonite crystals resulting in different luster and appearance from nacreous pearls
Pearl Production
- Coin-bead/spherical-bead (CBSB) production: a three-step freshwater cultivation process involving a series of distinct growth periods
- Mabé: an assembly composed of a nacre dome, filler, and a mother-of-pearl backing
Pearl Industry
- Bead nucleus: a bead used as the core of a cultured pearl, usually made from a freshwater mussel shell
- Mantle-tissue piece: a small square of mantle tissue cut from a donor mollusk and implanted in a host mollusk
- Processor: a company that prepares cultured pearls for the market
- Hank: a number of similar cultured pearl strands bundled together
- Strand: a simple necklace typically composed of pearls; also, pearls very close to the same size strung without a clasp for wholesale marketing
- Uniform strand: a necklace featuring pearls that are very nearly the same size
- Graduated strand: a necklace with the largest pearl in the center and progressively smaller pearls approaching the clasp
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