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About product and suppliers:
        Alibaba.com offers 1,029 gem detector products. About 83% of these are industrial metal detectors, 4% are jewelry tools & equipment. 

A wide variety of gem detector options are available to you, such as paid samples. 

There are 1,037 gem detector suppliers, mainly located in Asia. The top supplying countries are China (Mainland), Japan, and Thailand, which supply 98%, 1%, and 1% of gem detector respectively. 

Gem detector products are most popular in Western Europe, North America, and Africa. 

You can ensure product safety by selecting from certified suppliers, including 175 with ISO9001, 113 with Other, and 26 with OHSAS18001 certification.