Wholeale Jewelry -

If the weather is not good, Ying Ran gray sky dew formation is a black Pearl, which has a spread in the 15th century. Although it failed to explain the causes of Pearls, but it shows that people come to know Pearl, the put the Black Pearl as a special variety to look at.
Quality of the Black handmade Pearl jewelry body color to malachite green and steel gray mainly black Pearl is a popular after 70 years, and previously only access to the natural black Pearls are very rare, because very little yield without getting anywhere. Japanese cultured freshwater Pearls in 1965, experts in Australia, successful implementation of the black butterfly shell Pearls technology, breeding out the color from green to black Pearls. And they achieved commercial production. However, the Black butterfly shell Pearl farming out not all black Pearls, black Pearls achieve the gem fewer.
    Black such as Pearl earrings is currently only two major natural origin; first Polynesian Islands, Tahiti, output 95% of the world's black Pearls; 2 Penrhyn Island, Cook Islands, and Umai Hickey Island, accounting for total output of 4 %. Cohabitation in these two regions in central and southern Pacific Ocean, it is also called black Pearl black South Sea Pearls. The estimated annual production of high-quality black Pearls is not more than 150,000, of which 40%, through the annual international auction will be for sale. Most of the Black Pearl focused on the 9mm to 10mm diameter between about 6 and above into a black Pearl particle size of not more than 11mm. It is generally the 11mm as the treasures of the boundaries of the Black Pearl, while more than 15mm fine round black Pearl is very rare because no ready market price can be found. Black Pearl because of the more expensive, system ofPearl necklaces jewelry, Pearl rings jewelry and earrings jewelry more.
The causes of the Black Pearl Color: One theory is that Pearl of life back into the sea contain specific minerals and trace elements caused by the black, such as iron, titanium, vanadium, manganese; Another theory is that the surface of the shell corner opal Pearl high content of organic matter that is components of high-carbon components. The Department of crack than any other color Pearl-rich caused the formation of the Black Pearl, but in any case has nothing to do with oxygen, it belongs formed under special circumstances