Although the main reservoir of accounts saltwater mollusks, freshwater mussels in ponds, lakes and rivers are also popular sources of pearls. Tagged as a stone of June, which are used exclusively by women and that requires no grinding or cutting.
Here are some interesting facts about pearls -
They form when a foreign body is inserted into the shell of a mollusk. Cultured pearls this is done by human intervention as opposed to natural formation that is triggered by a particle of sand or any other "irritant."
Mollusk secretes a substance called nacre which forms an organic material layer on a foreign particle. Cause the formation of Lucent ball is known as a jewel.
Different types of pearls -
Japanese Akoya pearls are often used to describe cultures. But today is grown in China, South Korea, Vietnam and Australia. colder waters off the coasts of these countries are largely responsible for the brightness of these high quality tiffany necklace heart Orphic glow. Their size varies, an average of 6 to 7 mm and are almost round in shape. They are mainly available in white and cream.
Freshwater pearls are cultivated mussels, called Hyriopsis Cuming. They are mainly produced in China, Japan and some countries in North America. They vary in size from 4 mm to 11 mm. Almost 38% may be unbalanced, popularly known as the fall of the Baroque style, and tears. Most of these irregular Orphic spheres are small and used to make necklaces. Rounded and are used for the construction of other jewelry.
cultured pearl in French Polynesia is a true type of Tahiti. They are fed black-lipped oyster, scientifically known as Pinctada Margaritifera Cuming. They vary in size from 8 mm to 14 mm with various forms. Almost 40% of them are perfectly spherical. Black, gray, green, blue are some of the most popular colors.
South Sea pearls are grown in both lipped oyster silver, or gold-lipped oyster. The scientific name of the shellfish, where it is grown is called Pinctada Maxima, and found the coast of Australia, Indonesia and the Philippines. Their average size is about 13 mm and 60% of the oval. Available in white, cream and silver, can also have a number of purposes like a rose and gold. Formed solid nacre, have excellent luster.
All these types can have varying degrees of stain on them, but some may be totally clean. While buying pearls, it is always advisable to make a new X-ray to be sure of quality.
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