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Baroque pearls are pearls with an irregular, non-spherical shape. [1] [2] Shapes can range from minor aberrations to distinctly ovoid, curved, pinched, or lumpy shapes. Most cultured freshwater pearls are baroque because freshwater pearls are mantle-tissue nucleated instead of bead nucleated. Cultured saltwater pearls can also be baroque, but ...
So a strand will never be 7 mm, but will be 6.5–7 mm. Freshwater pearls, Tahitian pearls, and South Sea pearls all measure to a full millimeter when considered uniform. A graduated strand of pearls most often has at least 3 mm of differentiation from the ends to the center of the necklace.
Cultured dark Tahiti pearls — one of the pearls is cut to expose the manmade nucleus bead. The cultured pearls on the market today can be divided into two categories. The first category covers the beaded cultured pearls, including Akoya, South Sea, Tahiti, and the large, modern freshwater pearl, the Edison pearl.
Pinctada maxima. Pinctada maxima is a species of pearl oyster, a marine bivalve mollusk in the family Pteriidae, the pearl oysters. There are two different color varieties: the Gold-lipped oyster and the Silver-lipped oyster. These bivalves are the largest pearl oysters in the world. They have a very strong inner shell layer composed of nacre ...
Tahitian pearl. Tahitian pearls in bulk. The Tahitian pearl (or black pearl) is an organic gem formed from the black lip oyster ( Pinctada margaritifera ). [1] These pearls derive their name from the fact that they are primarily cultivated around the islands of French Polynesia, around Tahiti. [2]
Coralliidae. Genus: Corallium. Cuvier, 1798. Species. 31 species, see text. Precious coral, or red coral, is the common name given to a genus of marine corals, Corallium. The distinguishing characteristic of precious corals is their durable and intensely colored red or pink-orange skeleton, which is used for making jewelry .
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