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About product and suppliers:
        Alibaba.com offers 187 gem mining machine products. About 30% of these are mineral separator, 14% are crusher, and 12% are loose gemstone. 

A wide variety of gem mining machine options are available to you, such as gravity separator, jaw crusher, and magnetic separator. 

There are 187 gem mining machine suppliers, mainly located in Asia. The top supplying country is China (Mainland), which supply 100% of gem mining machine respectively. 

Gem mining machine products are most popular in Domestic Market, Africa, and Southeast Asia. 

You can ensure product safety by selecting from certified suppliers, including 77 with Other, 67 with ISO9001 certification.