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About product and suppliers:
        Alibaba.com offers 1,848 diamond tester products. About 40% of these are jewelry tools & equipment, 22% are hardness testers, and 10% are testing equipment. 

A wide variety of diamond tester options are available to you, such as testers & measurements, loupes, magnifiers, and engraving tools. You can also choose from free samples, paid samples. 

There are 1,863 diamond tester suppliers, mainly located in Asia. The top supplying countries are China (Mainland), India, and Hong Kong, which supply 97%, 1%, and 1% of diamond tester respectively. 

Diamond tester products are most popular in North America, Southern Europe, and Northern Europe. 

You can ensure product safety by selecting from certified suppliers, including 353 with ISO9001, 260 with Other, and 17 with ISO14001 certification.