Entering the colorful and dazzling jewelry world, pearls attract people's attention with soft luster and charming colors. Pearl ornaments are graceful but not vulgar, charming, pretty but not frivolous, elegant and dignified, noble and elegant, full of oriental poetry and painting.

Pearl is the product of shellfish. There are many shellfish living in the ocean or fresh water, such as abalone, mussel, mussel, crab and so on. Some cells in the shell mantle secrete keratin and calcium carbonate, which overlap each other to form nacre.

If stimulated by a foreign body entering the body, these secretions will constantly wrap the foreign body and form shiny round beads, which are pearls. However, the pearl with large output and good quality is marine pearl oyster, among which the pearl produced by Pinctada maxima is the largest, and it is gorgeous in color, high in quality and charming in luster.

Pinctada maxima, also known as Pinctada maxima and Pinctada maxima, belongs to Pinctada of Labiatae and is the largest Pinctada maxima in China. Its shell is very big, generally about 25 cm, with a maximum length of 32 cm and a weight of 4,000 to 5,000 grams.