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About product and suppliers:
        Alibaba.com offers 98 opal stone slabs products. About 15% of these are marble, 12% are granite, and 4% are loose gemstone. 

A wide variety of opal stone slabs options are available to you, such as big slab, cut-to-size, and tile. You can also choose from white, beige, and black. As well as from polished, brushed, and machine-cut. And whether opal stone slabs is calcite, dolomite, or onyx. 

There are 96 opal stone slabs suppliers, mainly located in Asia. The top supplying countries are China (Mainland), India, and Zimbabwe, which supply 84%, 8%, 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 Other, and 6 with ISO14001 certification.