Our pearl processing factory is located in Guangzhou, one of the most developed cities in China. Large number of technical personnel are gathered here, at the same time, a team of well trained and experienced technicians have grown up. Our factory is equipped with first-class production equipments in the world, based on introduction and assimilation of international processing technology, the factory has now possessed internationally advanced pearl processing technology.

Washing of pearls

After picked-up, pearls should be washed immediately, otherwise colloid-like calcium carbonate and organic matter on the surface will condense, which makes pearl dull, and degenerated due to oxidation.

Common washing methods we adopt are: 1. wash with soap water, 2. wash with salt water, 3. wash with lauryl alcohol sodium sulphate, 4. wash with hydrogen peroxide solution, 5. wash with hydrochloric acid, 6. wash with oxalic acid.

2. Classification of pearls

Picked-up pearls¡ªpearls suitable for processing¡ªbleaching¡ªpolishing

Then pearls of different grades are classified according to color, surface, size and roundness, etc.

3.Processing of pearls

Punching¡ªbleaching¡ªwhitening--polishing

1. Purpose of punching

@ For chaining of pearls to make necklaces

@ Improve pearls with some defects by punching, such as pearls with small protuberances, and those with small black tail.

@ It helps chemicals penetrate into pearl layers when performing degreasing, bleaching, whitening and color optimizing.

2. Bleaching

Bleaching is the process to use chemicals to clean internal pearl layers with impurities and dirt, while not damaging pearl layers for re-appearance of the luster of pearls.

3. Whitening

Pearls should be whitened after bleaching to further improve whiteness.

4. Polishing

Put bleached or non-bleached pearls to the polishing machine, slowly put fragments of smashed tanned sheep skins and pearls to the polishing machine, mix the fragments of tanned sheep skins and pearls, then start the machine to roll the fragments of tanned sheep skins and pearls to increase the whiteness and luster of pearls.

4. Uses of pearls after processing

1. Full-hole pearl¡ªstring them into pearl chain

2. Semi-hole pearl¡ªdeliver to pearl ornament factory for inlaying into ornaments with gold, silver, and diamonds, etc.