1. Orient pearl
East-also commonly used as a synonym for natural pearls, there are two main production areas located in the Persian Gulf, west of Iran, Saudi Arabia, east of the Persian Gulf waters, fishing for mining natural pearls mainly concentrated in the western part of the Persian Gulf, Saudi Arabia in shallow water district. Pearl production area of good quality, in the white, milky white on the appropriate color, with green halo color.-pearl jewelry. Pearl annual Paris trading on the market, more than 90 percent, natural pearls from the top district. Sri Lanka Sri Lanka-producing areas of pearls from Mannar Bay. Pearls were white or milk white, the color vector with green, blue or purple halo color.

2.South sea pearl
Southeast Asia region, including Myanmar, China, the Philippines and Australia, in these areas by the middle of the natural pearl beads that Southeast Asia, Southeast Asia bead, a round shape, color white, with strong pearl sheen, also known as the "silver" luster, it is the world of luxury The pearl varieties. Duocheng natural pearls round, cross-section from the table, and the whole is an extremely thin layer of concentric circular pearls cascading from Canada. Naked eye to identify the main basis for the following three points:

Color
Natural pearls of the main body color is white, milk white, pink, and occasionally see a black ash. On with its rose colour, blue, green and other bright halo of color.

Shape and structure
Natural pearls show more spherical, their digging a hole in one at the top of the carton, will light a flashlight into the carton in the transmission, to see a uniform structure of the micro-transparent sphere, not like the artificial breeding of nuclear Pearl, a stripe-like kernel.

Surface papules
Pearl jewelry is a kind of biological products, the surface of the pearl-like lesions some papules, the papules with the naked eye can see is the uplift of small blisters, small papules teeth gently with the following Ceng, or two small beads in front of Friction, obviously the feel of the sand.