South Africa Pearl Gold Diamond 2015 Fashion Jewellery 145

 South Africa Pearl Gold Diamond 2015 Fashion Jewellery. 

By Aamir Mannan.
How pearls are processed for market

Saltwater cultured pearls can never be a mass-produced, factory-like product. The whims of unpredictable Mother Nature do not allow it. Millions of oysters are nucleated every year, but only a small proportion live to produce fine-quality cultured pearls. Many oysters don't survive the nucleating process, others are weak and fall prey to disease. Heavy rains may flood the bays with fresh water, reducing their salinity, and killing the oysters. Sometimes, certain species of phytoplankton undergo explosive growth, creating the dreaded "red tide," which exhausts the oxygen in the water, and suffocates the oysters. Then there are typhoons, the attacks of predators and parasites, lack of sufficient nutrients in the water.