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About product and suppliers:
        Alibaba.com offers 4,971 hpht diamond products. About 44% of these are loose diamonds, 33% are abrasives, and 6% are loose gemstone. 

A wide variety of hpht diamond options are available to you, such as d, f, and e. You can also choose from round brilliant cut, cushion cut, and heart cut. As well as from vvs1, si1, and fl. And whether hpht diamond is excellent, very good, or good. 

There are 4,974 hpht diamond suppliers, mainly located in Asia. The top supplying countries are China (Mainland), India, and Israel, which supply 89%, 7%, and 2% of hpht diamond respectively. 

Hpht diamond products are most popular in South Asia, Southeast Asia, and North America. 

You can ensure product safety by selecting from certified suppliers, including 424 with ISO9001, 110 with OHSAS18001, and 110 with ISO14001 certification.