MANTIS is the latest diamond tester that works independently or in-conjunction with Gemlogis BLEU a color stone meter with touch sensitive display to further identify the stone type. Tests loose melee,
mounted stones, colored and colorless gemstones within a range of 0.02ct onwards.
This wall chart contains superbly detailed photomicrographs showing internal features observed in natural, treated, and synthetic sapphires. Published in the Summer 2017 issue with the article by Nathan D. Renfro et al., ìInclusions in Natural, Synthetic, and Treated Sapphire,"