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About product and suppliers:
        Alibaba.com offers 16,998 opal stone products. About 31% of these are loose gemstone, 1% are marble, and 1% are other commercial furniture. 

A wide variety of opal stone options are available to you, such as opal, zircon, and quartz. You can also choose from oval cut, round brilliant cut, and heart cut. As well as from synthetic (lab created), natural, and mineral gemstones. And whether opal stone is color change, color play or fire, or opalescent/opalescence. 

There are 16,871 opal stone suppliers, mainly located in Asia. The top supplying countries are China (Mainland), India, and Hong Kong, which supply 76%, 15%, and 4% of opal stone respectively. 

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

You can ensure product safety by selecting from certified suppliers, including 1,422 with Other, 194 with ISO9001, and 26 with BSCI certification.