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About product and suppliers:
        Alibaba.com offers 86 opal stone slabs products. About 27% of these are artificial stone, 19% are marble, and 16% are granite. 

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

There are 85 opal stone slabs suppliers, mainly located in Asia. The top supplying countries are China (Mainland), India, and Zimbabwe, which supply 83%, 9%, and 2% of opal stone slabs respectively. 

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

You can ensure product safety by selecting from certified suppliers, including 8 with ISO9001, 6 with ISO14001, and 5 with Other certification.