1, shape: The common shapes of pearls are round, oval, oval and rectangular. Round is the best.

2. The colors of pearls are white, yellowish white, light pink, purple, light blue, orange and so on. , different shades of color. Generally speaking, it is better to buy pearlescent, magnificent, soft and single color. In Europe, cream and light pink pearls are the most valuable, but from a practical point of view, white pearls are the best, suitable for all skin colors and clothing colors.

3. Gloss: The luster of pearls is an important factor in evaluating their value. People often say "pearl" or "jewelry" refers to the luster of pearls. If the pearl is placed in a shadow or dark place, it will glow, glow and shine, which is the top grade; Pearls with rainbow colors and dazzling light have the highest value.

4. Size: The diameter of a pearl is usually1-10 mm. The bigger the pearl, the more round it is, and the more beautiful it is, the more valuable it is.