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About product and suppliers:
        Alibaba.com offers 16,287 opal stone products. About 28% of these are loose gemstone, 21% are silver jewelry, and 5% are rhinestones. 

A wide variety of opal stone options are available to you, such as free samples, paid samples. 

There are 16,098 opal stone suppliers, mainly located in Asia. The top supplying countries are China (Mainland), India, and Hong Kong, which supply 78%, 13%, 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 969 with Other, 203 with ISO9001, and 25 with BSCI certification.