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About product and suppliers:
        Alibaba.com offers 1,996 certified gemstones products. About 74% of these are loose gemstone, 11% are rings, and 9% are gold jewelry. 

A wide variety of certified gemstones options are available to you, such as sapphire, zircon, and aquamarine. You can also choose from natural, organic gemstones, and mineral gemstones. As well as from pear cut, marquise cut, and emerald cut. And whether certified gemstones is fracture filling, heat, or waxing/oiling. 

There are 1,983 certified gemstones suppliers, mainly located in Asia. The top supplying countries are India, China (Mainland), and Sri Lanka, which supply 74%, 13%, and 5% of certified gemstones respectively. 

Certified gemstones products are most popular in North America, Central America, and South America. 

You can ensure product safety by selecting from certified suppliers, including 86 with Other, 41 with ISO9001, and 1 with ISO14001 certification.