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About product and suppliers:
        Alibaba.com offers 335,831 cz products. About 29% of these are silver jewelry, 17% are earrings, and 8% are loose gemstone. 

A wide variety of cz options are available to you, such as round brilliant cut, asscher cut, and cushion cut. You can also choose from pleochroic/pleochroism, dichroism/dichroic, and color play or fire. As well as from zircon, garnet, and quartz. And whether cz is synthetic (lab created), mineral gemstones, or natural. 

There are 327,882 cz suppliers, mainly located in Asia. The top supplying countries are China (Mainland), India, and Hong Kong, which supply 89%, 6%, and 1% of cz respectively. 

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

You can ensure product safety by selecting from certified suppliers, including 65,886 with Other, 16,858 with ISO9001, and 2,239 with ISO/TS16949 certification.