A) Natural Pearl jewelry is an accident of nature products. Containing software nacre shellfish can produce pearls, when you eat fresh abalone time has paid attention to blue-green shell shining glory? This is the mother pearl layer, is composed of many calcareous overlap with the thin together, when the mussels open inspiratory sand or micro-organisms such objects will enter the body of the accident, when the mussels are not feeling well stimulation, it will secrete nacre layer invasion were surrounded, so as to reduce their suffering. After years secretion, small grains of sand has become a beautiful and full of shiny pearl. Because of their extremely rare, very expensive prices, there is less sales.

B) refers to cultured pearls of seawater and freshwater cultured pearls, fashion jewelry, pearl aquaculture is the growth of sea shellfish  cultivation, they are people to a round of nuclear mother Chu Pui cumingii inserted inside the body, it stimulated the secretion of nacre will be the mother of nuclear surrounded beads. (Round of nuclear mother beads from the ground into a mussel shell) and freshwater cultured pearls are produced in the river or lake cumingii body, the formation of cultured pearls and seawater, but do not have nuclear beads, to switch to other shellfish meat Cut into small article Add clam body to make it secrete nacre its siege. Water cultured pearls on climate and environment for high yield scarce, a general can only be dependent Benesova pearl, and freshwater cultured pearls can be a bay to raise more than 16. Water cultured pearls shape is round, freshwater cultured pearls are mostly irregular shape, it is their biggest difference.
 
C) than Mary beads are attached to the shell beads category, handmade jewelry,check on the white disc Pui, Penguin Bay, produced in South Australia. Is a convex cultured pearls and a blister-like lining martensii from conformation together. Convex blister-like pearls in the shells and inserted between the mantle talc, wax or plastic beads made of semi-ball is placed down the sea mollusk shell produced by Ping. Hemisphere at the end of the plane and the inner surface of shells contact (At this point, to yield beads of mollusks in the size of bead diameter than they normally have been able to endure much more). End up with nacre layer from the shell have been cut down, remove the semi-beads, getting half a hollow dome of nacre, and then glued them together.
 
D) imitation pearl beads is imitation, it is not climate, environmental impact, as long as the conditions of a certain production technology, equipment and raw materials to production, because it does not have the use of pearls, can only serve as handicrafts, jewelry can not be included in category, and the simulation of strong prices with a deceptive, customers are required to buy pearls to distinguish carefully.