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About product and suppliers:
        Alibaba.com offers 200,012 gems products. About 41% of these are loose gemstone, 10% are silver jewelry, and 9% are rings. 

A wide variety of gems options are available to you, such as zircon, opal, and sapphire. You can also choose from synthetic (lab created), mineral gemstones, and natural. As well as from color play or fire, color change, and iridescence/iridescent. And whether gems is heat, waxing/oiling, or fracture filling. 

There are 187,999 gems suppliers, mainly located in Asia. The top supplying countries are China (Mainland), India, and Hong Kong, which supply 58%, 35%, and 1% of gems respectively. 

Gems products are most popular in North America, South America, and Western Europe. 

You can ensure product safety by selecting from certified suppliers, including 17,395 with Other, 4,712 with ISO9001, and 788 with OHSAS18001 certification.