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Opinion concerning Lab grown diamond testers

I am seeking referrals/opinions concerning the various lab-grown (HPHT and CVD) diamond testers. Has anyone worked with the testers and have a preference?

Hi Charlene, we are using a GIA ID100 , we purchased it in 2019 , excellent machine, one of those things that I can’t imagine not having in the store at this point
It has paid for itself many times

As a laboratory, we use the MagiLab EXA equipment. Its quick discrimination method, and Advanced mode functions make it the most versatile on the market. -for more information