An advanced Jewelry manufacturing factory direct from China, possessing of whole China the first top brand, Opal-China Opals & Jewelry Factory Limited (OC&O), established in 1998, is a leading manufacturer with own buying office in Australia and a head office based in HK. As a specialist in loose opal cutting and jewelry manufacturing industry for over 8 years, we offer one stop ordering for all your opals & jewelry needs. With over 500 Chinese skillful craftsmen and an excellent designers team, we cut, design, set, make and sell our own superior opals & jewelry product with the lowest ex-factory price to the customers all over the world.

Our main product is Natural Australian Opals, Synthetic Lab Opals, Natural Opal Silver/Gold Jewelry, Synthetic Opal Silver/Gold Jewelry, Opal Inlay Jewelry, Multi-Color Jewelry and a full range of Other Precious Semi-Precious Gemstone Jewelry, as well as we do Opal Gemstone Engraving, Opal Watches and Fashion Jewelry.

Our Cutting Opal Stones line covers Natural Australia Opals, Synthetic Opals/Lab Created Gilson Opals, Opal Doublets, Opal Triplets, Opal Mosaic, Opal Boulder and Opal Beads, we hand pick and custom cut most grades, sizes and shapes to satisfy all customers' needs. We produce calibrated opals above more than five million pieces a year totally.