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About product and suppliers:
        Alibaba.com offers 7,216 black agate stone products. About 12% of these are loose gemstone, 6% are stone beads, and 5% are necklaces. 

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

There are 7,216 black agate stone suppliers, mainly located in Asia. The top supplying country is China (Mainland), which supply 100% of black agate stone respectively. 

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

You can ensure product safety by selecting from certified suppliers, including 606 with Other, 175 with ISO9001, and 82 with SA8000 certification.