The quality of these products can be guaranteed Chopard Replica watches  by taking control of  certain factors such as oyster health, the water temperature and so on.   Japan was the first country ever to start cultured pearl industry.   They cultured pearls from salt water mussels and moved on with  freshwater mussels. They were quite successful in their attempts and the  pearls produced from freshwater were harvested in a range of colors.   Regardless of their origin, all the cultured pearls were referred to as  the Biwas as the first experiment on pearl culture was carried out in  Lake Biwas.  Later, China was also able to use the technique of pearl  culture and became the new dominant figure in the market.  Their  advantage was that they had huge amount of open land, cheap human labor  and innumerable lakes.  Their quality of pearls surpassed the quality of  Japan best pearls and they also sold it at cheaper Chopard Replica watches  prices.
Genuine freshwater pearls are quite rare.  They are difficult to create or find unlike cultured pearls.  There are many imperfections in natural freshwater pearls but still they are incredibly in high demand and more expensive than cultured pearls.  Natural freshwater pearls and natural sea water pearls have the same process of ***.  The mussel or oyster is invaded with a foreign material such as a pebble or parasite.  When the mussel or oyster is unable to remove the foreign object from its system then it starts secreting nacre to overcome its discomfort.  Nacre is what pearls are made up of.  After the production of pearls, they are harvested and made into beautiful accessories such as pearl drop earrings.  Cultured pearls are made with human assistance.  Mantle tissue from other oysters  Chopard Replica watches  is inserted in the opening of the oyster shell by the pearl divers.
