Shape: shape to the rules, water beads with rounded top grade. Of course, there are drop-shaped, oval and so on.
Texture: refers to the pearlof the structure and surface characteristics. Point defects are not pearls are extremely rare. If the pearl surface with some scratches, pits, etc. will affect the value of pearls. Should be observed.
Color: The color value of the pearls have a significant impact. Especially in the same grade of pearl, the color of a great impact on prices, such as the value of black pearls are often high. National differences of color have different orientation, such as the Americans like pink pearls, golden pearls like the Japanese, and Chinese people like bright white pearls.
Size: Chinese pearl industry, "Jennifer seven, eight treasure", which in other respects under the same conditions, the size is the deciding factor.
