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About product and suppliers:
        Alibaba.com offers 293,636 cz products. About 28% of these are silver jewelry, 17% are earrings, and 9% are copper alloy jewelry. 

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

There are 285,900 cz suppliers, mainly located in Asia. The top supplying countries are China (Mainland), India, and Hong Kong, which supply 88%, 6%, and 2% 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 61,989 with Other, 12,616 with ISO9001, and 1,986 with ISO14001 certification.