Types of Pearls

hello every body
today we will talk about some type of pearls
   Types of pearls fall into two main categories: Freshwater & Saltwater.
or cultivated in salt water oysters in a bay, ocean, gulf, or sea. These also can be irregular in shape, especially when natural, although the best cultured ones are known for their fine round shape.
Each type may be either natural (nature made) or cultured (man induced) and inside each category are different varieties of pearls.
A separate category may also include pearls from snails, as most pearls come from bivalve mussels or oysters (having 2 shells which close together). 
I enjoyed learning at the traveling pearl exhibition that any mollusk can grow pearls...pretty exciting
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 South Sea Pearls Usually refers to large white or yellow types of pearls grown by the Pinctada maxima oyster which lives in the South Seas, also called silver-lip or yellow-lip oyster. South Sea Pearls can also mean any saltwater pearl found from the Philippines and Indonesia down to Australia and across to French Polynesia. These pearls often are 9-19mm in size.

Blue Mussel Pearls Pearls from the blue mussel saltwater mollusk

Blue Mussel Pearls
Button Pearls Types of pearls which are round in circumference, but flattened somewhat, like a button

Blister Pearls These types of pearl refers to a pearl that has gotten embedded in the mother of pearl shell, so it looks like a "blister." It can be cut out and mounted so the back, which has no nacre, doesn't show. In the 13th century, Chinese were making buddha blister pearls by placing a small, flat, lead buddha inside an oyster and letting the oyster coat it with nacre. The resulting "pearly buddha" was used for good luck. Blister pearls can be cultured in certain shapes such as a heart, square or tear drop by gluing a plastic piece in these shapes against the inside of a shell.

Another name for these solid cultured blister pearls is under the registered trade mark of "Dome'." Tennessee in the USA cultivates these in high quality and a variety of shapes.
After hollow blister pearls are prepared for mounting, they are called Mabe...see below.

Blister Pearl still in shell

Black Pearls Technically used to describe types of pearls from the black-lip (Pinctada margaritifera) oyster in Western to Central pacific Ocean or from La Paz pearl oyster (Pinctada mazatlanica) or rainbow-lipped oyster (Pteria sterna) in the Eastern Pacific between Baja California and Peru. These all produce a natural black pearl. More generally, the term black pearls can also refer to natural black freshwater pearls or pearls dyed black or any dark colored pearl. (Many types of pearls called "black" are really a variety of dark colors).

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.And also there are many kinds, but I will stand today and tomorrow there will be a second part