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Natural Freshwater pearls are formed within a mussel. These mussels are filter feeders and open their shells slightly and allow water to flow in so that they can take nutrients from the microscopic particles and organisms in the water.
As a result, small irritants such as small animals can also float in. Parasites can also drill right through the mussel's hard shell.
To protect itself, the mussel enclosed the irritant in a sac and then secretes layer upon layer of nacre around the irritant. After time, this results in a lustrous pearl. |
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One of the largest natural pearls in existence today is the Hope Pearl. It belonged to its namesake - Henry Phillip Hope. Hope's incredible gem collection also included the infamous blue Hope Diamond.
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Historical records show that freshwater blister pearls were the first the be successfully cultured over 700 years ago.
These blister pearls that were grown against the shell of the mussels. The mussels were carefully nurtured and became beautiful adornments. Figures of Buddha as well as other shapes were very popular.
About 70 years ago, the Japanese were successfully in producing small, off shaped and very lustrous pearls. These first cultured Freshwater pearls were produced in Japan's Lake Biwa. As a result, some irregular shaped, lustrous freshwater pearls are referred to as "Biwas" but only pearls produced in this area should be referred to in this manner.
About 30 years ago, the Chinese produced rice shaped white freshwater pearls as well in large quantities.
Now the crop yields quality over quantity and these pearls are round and lustrous.
Some can even rival their saltwater counterparts |
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