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About product and suppliers:
        Alibaba.com offers 9,070 black agate stone products. About 9% of these are loose gemstone, 1% are marble, and 1% are other natural stone. 

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

There are 9,070 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, South America, and Western Europe. 

You can ensure product safety by selecting from certified suppliers, including 585 with Other, 155 with ISO9001, and 61 with SA8000 certification.