www.aypearl.com tell you how to choose pearl necklace-

Shape: 

The common shapes of pearls are round, off-round, button, oval, tear drop, symmetrical and the perfectly round is the best chose .

color :  wholesale jewelry 
 
The colors of the pearls is white, yellow and white, light pink, purple, light blue, orange etc, and the depth of the color is different. In general, you’d better chose the one which has rich luster, magnificent color, soft and single color. In Europe the cream color and light pink pearls are the most valuable. But for practicality, the white pearl is the best chose, it is suitable for different kinds of complexion and complexion decoration.

Luster:
 
The luster of pearl is the important factor in identifying the value of pearls, the “luster” and “jewelry” that people often said refers to the luster of pearl. If the pearl is placed in the shadow or dark, it will shine, sparkling, dazzling and that is a top-grade, the pearl which has the sense of rainbow-color and radio dazzling is the most valuable. handmade jewelry

size:  

The length of pearl diameter is usually from 1mm to 10mm, the bigger , rounder and dazzler of the pear the more valuable it is.

http://www.aypearl.com/ wholesale jewelry online store, It offers a wide variety of handmade jewelry products – wholesale pearl,wholesale crystal,wholesale gemstone,wholesale turquoise,wholesale coral,wholesale shell,wholesale swarovski and other accessories.