Species and origin of the pearl

Natural pearls in water mussels, shellfish naturally formed pearl.
Farmed pearls technology promotion before, the world's natural pearl is always dominant. However, its production is very limited. The Middle East is a natural Haizhu purchase market.
The origin of natural seawater pearls in the Persian Gulf (Iran, west, east of Saudi Arbor Persian Gulf), Sri Lanka in the Indian Ocean and Southeast Asia (including Indonesia, Myanmar, the Philippines and Australia and other countries and regions). The waves of Bay of Sri Lanka produced pearls, high quality, usually white, milky white. Has a very strong pearl gloss, the larger particles. Usually people this pearl of the outputs of the two regions known as the Oriental Pearl, referred to as the East Pearl. South Sea Pearl and the region produced. South Sea Pearl and the region producing the color white, bead-shaped circle of larger grain layer is thick, strong pearly luster, also known as the "silver beads, is a rare species in the world, the price level is expensive. Hepu of Guangxi, China has long been rich in natural pearls, its quality, yield. Well-known in China's pearl (Hepu beads) seven natural Zhuchi (white pool, bayberry, blue infants, Pingjiang, monopoly, black mud, spider sand) most the Hepu the southeast coast of the sea area. Venezuela's northern coast, was once a place of abundant natural pearls, naturally from Columbus' discovery of the region, however, one after another away some of the adventurers destroyed the ecological environment and shellfish death exhausted. In addition, Mexico, Panama.
Cultured Pearl
Based on two kinds of pearls artificially cultivated shellfish, mussels and other small pieces of the carrying out of the cells of the graft or implanted beads nuclear. Nuclear-free pearl refers to the shift value cells small pieces to sterile beads shellfish, mussels in vivo by the formation of pearls; a nuclear Pearl is refers to the addition to the shift value cells small piece, but also with the transplanted cells in a small piece insert shell quality pearls nuclear, to make cells small piece of secretion of Pearl claimed hemisphere bred pearl nacre deposition in the nuclear surface, the bead core is spherical, the train pearl, pearl attached attached blister pearl shells, clam shells on, it is called.
According to different aquaculture water into mariculture and freshwater cultured pearls. The type of pearl production is certainly better than natural pearls. And accounted for more than 90% of the pearl market share of trade. Concrete can be divided into:
Saltwater cultured pearls
Pearl color related to the sales price, it is described separately.
(1) marine aquaculture Black Pearl. Known black pearl production in Hawaii, Tahiti, French Polynesia, China Lingshui, Sanya and other places. The individual size of the breeding of the Black Pearl in black dish shellfish considerable length of up to 30 cm, weight 3-4 kg, and thus the pearl farming out particles, generally in more than 10 mm from Polynesia general 12-15 mm, with a maximum of 20.8 mm, beads thick, shiny and strong, dark and black, round shape, is a very high quality.
(2) marine aquaculture white pearls. The origin of the white pearl more, but generally a very small number. CD Japan, China up to the two countries production capacity accounted for 90 percent of world production.
The origin of seawater cultured pearls are mainly distributed in the triple, high and, Ehime, Nagasaki, Hiroshima and Kumamoto and other counties. Which triple by the middle of pearls, is a high-quality beads. Japan's annual output of 40 tons, ranking first in the world, most of the better quality of sea water pearls.
Seawater cultured pearls, place of origin issued in Fangcheng, Qinzhou, Hepu, the North Sea; Guangdong Kang (now known as Leizhou) Xuwen County; Lingshui, Sanya waters. To Hepu beads, quality Luo, Hainan Pearl, with an annual output of about 14 tons.


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