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This means that a Tahitian pearl can more easily grow to a larger-than-average size. [3] The cultured Tahitian pearl comes in various shapes, sizes, and colors; shapes include round, semi-round, button, circle, oval, teardrop, semi-baroque and baroque. [4] Because of their darker hues, Tahitian pearls are commonly known as "black pearls". [5]
The Pearl of Lao Tzu for a long time thought to be the largest pearl, but claims about its size and much of its history were found to be fabricated by a conman by the name of Victor Barbish. [2] Other pearls like the Centaur Pearl, most likely the largest gem pearl at 856.58 carats (171.316 g), have just recently emerged from private ...
Natural black pearls are rare, with black pearls having a body color that may be assessed as silver, silver blue, gold, brown-black, green-black, or black. [20] Black cultured pearls from the black pearl oyster – Pinctada margaritifera – are not South Sea pearls, although they are often mistakenly described as black South Sea pearls. In the ...
The original weight of this pear-shaped pearl was 223.8 grains, (55.95 carats, 11.2 g, almost .4 oz.). At the time of its discovery, it was the largest pearl ever found. In 1913 the pearl had to be drilled and cleaned to secure it firmly to its setting. After drilling and cleaning, the pearl's weight decreased to 203.84 grains.
Pearl jewelry stores may bleach or dye freshwater cultured pearls after harvesting to enhance their color. The most valuable baroque pearls are the South Sea and the Tahitian pearls , which are produced by Pinctada margaritifera (black-lipped oysters ) and Pinctada maxima (gold-lipped and white-lipped oysters).
Majorica imitation pearls are man-made on solid balls, likely made of glass, that are coated with a proprietary coating that is made in part from fish scales. [1] The coated nuclei are then dried and polished, and then dipped in a chemical (possibly cellulose acetate and cellulose nitrate) to harden the surface and guard against discoloration, chipping, and peeling.