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About product and suppliers:
        Alibaba.com offers 6,899 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 onyx, agate, and amethyst. You can also choose from natural, synthetic (lab created), and mineral gemstones. As well as from round brilliant cut, oval cut, and asscher cut. And whether black agate stone is color play or fire, color change, or star. 

There are 6,899 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 605 with Other, 176 with ISO9001, and 85 with SA8000 certification.