The Pearl: The Formation of Pearls
Formation
A "natural" pearl is one that is found in an oyster at the bottom of the ocean.A "cultured" pearl is found in an oyster on a pearl farm.When a natural pearl begins,a foreign object finds its way into an oysters' soft inner body,so the oyster coats it with nacre,a soft crystalline substance.When a cultured pearl begins,our pearl farm inserts a tiny baby pearl into an oyster;then the oyster takes over to produce a beautiful pearl.As you can see,cultured pearls and natural pearls share the same properties;just think of it kind of like in-vitro fertilization! We have even gone as far as splitting one of our pearls to see what we find-it was solid pearl right through to the baby pearl core!
On the basis of the theory of forming natural pearls, people cut a tiny section from the ectoblast connective tissue of another clam. After the proliferating of cells and growing of bursa, a pearl came into being.These man-made pearls are called cultured pearls.In china, cultured freshwater pearls mainly come from HuaiheRiver, TaihuLake area and Wenling (ZhejiangProvince).
Seawater pearls mainly come from Guangxi Province, Guangdong Province and HainanProvince, North Sea and Sanya. SouthSea pearls mainly come from the South China Sea, Australia, Hawaii and Tahiti. One seldom sees round SouthSea pearls. Mostly they are off-round or baroque pearls.
SouthSea pearls are deep-sea cultured pearls. It takes 1.5 to 2 years to form a pearl.
Category
1.There are two types of pearls:natural pearls and cultured pearls.
2.Depending on where they are found,they are classified as:freshwater pearls, seawater pearls and SouthSea pearls
Color
There are many colors of pearls: pink, peach, purple, yellow, white, gray, brown, champagne and black. Among them, pink, peach and purple are the only natural colors to found in the freshwater.Along with shape and color, pearls can be designed into different styles. The black pearl is created by a big black oyster. The pigments of black and gray come from the color and chemicals excreted by the black oyster. Black pearls have high luster,metallic color and thick nacre. The darker the color,the higher the price.Among them, black pearls with a little bit of green are the most precious.
Quality
Pearls can be appraised in three ways:
1.Luster
A, Strong luster: sparking and crystal on the surface.
B, Medium luster: glittering and translucent.
C, Feeble luster: the luster is poor.
2.Shape:
A, Rotundity: also named " ball bearing".
B, Ellipse: thin and long also named "rice pearl".
C, Abnormality: Mum pearl, drop pearl, art pearl etc.
3.Size: The bigger, the more expensive.
Care
1.Don't put pearls beside anything hot,such as a heater or furnace.
2.Pearls need fresh air and water. You should wear your jewelry regularly.
3.The rigidity of the pearl is only 2.5 to 4.5,so you shouldn't put it together with other jewelry.
4.Don't wear pearl jewelry when you bathe or go swimming.
5.Place it down evenly.
Distinguish
1.When scratching two pearls against each other,you can see pearl powder and it doesn't damage the surface. This lets you know that the pearl is real.
2.When rubbing gently against your teeth. It should feel rough, not smooth, like sand on stone.
3.A real pearl is heavier than a fake one.
Adorn
1.The pearl's color should suit your skin.
2.The style and size should fit your dress and occasion
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