Commercial treatment to change the color of diamonds began in the late 1940s with HPHT (High Pressure High Temperature). This process can be used to turn stones with grayish or brownish hues to colorless or nearly colorless diamonds which can have a dramatic impact on their perceived value without proper diamond testing equipment.
While most treated stones should have laser inscriptions that would identify them as treated, many will not. This, of course, can have a big impact on your valuation and grading of your inventory so an HPHT diamond tester is a critical piece of equipment for any serious gemologist. Photo-luminescence spectroscopy is one of the few methods for identifying HPHT treatment in a laboratory.
Before using these testers, first determine if the stone is a diamond!
Kassoy offers a wide selection of diamond testing equipment. If you're in the market for an HPHT tester to determine if treatment has been used (and if your stones have been misrepresented), then view our products below, or contact an expert with questions at 800.452.7769.
List Price: $649.00
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