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About product and suppliers:
        Alibaba.com offers 15,943 opal stone products. About 31% of these are loose gemstone, 8% are stone beads, and 7% are necklaces. 

A wide variety of opal stone options are available to you, such as color play or fire, color change, and cat's eye. You can also choose from synthetic (lab created), natural, and mineral gemstones. As well as from oval cut, round brilliant cut, and heart cut. And whether opal stone is heat, fracture filling, or radiation. 

There are 15,709 opal stone suppliers, mainly located in Asia. The top supplying countries are China (Mainland), India, and Hong Kong, which supply 75%, 17%, and 4% of opal stone respectively. 

Opal stone products are most popular in North America, South America, and Western Europe. 

You can ensure product safety by selecting from certified suppliers, including 1,453 with Other, 201 with ISO9001, and 31 with BSCI certification.