A light and portable instrument that instantly identifies diamonds and most colored gemstones based on their thermal properties. Presidium Gemstone Tester / Colored Stone Estimator is the only colored gemstone thermal tester in the industry. It provides a quick and easy way to identify diamonds and separate common colored gemstones from one another based on their thermal conductivity. Coated gemstones can also be generally tested with the PGT/CSE. The Presidium Gem Tester / Colored Stone Estimator has a retractable probe tip that ensures consistent pressure against the gemstone during testing for more reliable results. With the industry's thinnest probe tip size of 0.6mm, PGT/CSE tests diamonds as small as 0.02ct. Does not differentiate between natural and synthetic colored gemstones. Features Retractable thermoelectric probe tip that ensures constant pressure between probe and gemstone Industry's thinnest probe tip (0.6mm) for testing diamonds as small as 0.02ct Metal alert buzzer to ensure that probe tip is in contact with gemstone during testing Clear and easy-to-read analog dial Multi-colored gemstone display No waiting time between tests Built-in diamond and simulant test discs for reference Powered by 2 x AA batteries or adaptor Leather carrying case included Benefits Identifies diamonds and most colored gemstones Tests both polished and unpolished gemstones Tests gemstones as small as 0.02ct Consistent and reliable results every time No waiting time between tests Clear and visible display for ease of reading measurements Simple and easy to use Light and portable tester that can be used anywhere Power and Battery 5 x AA batteries (approximately 4 hours of continuous use) AC adaptor 12- SKU: PDMI006

A light and portable instrument that instantly identifies diamonds and most colored gemstones based on their thermal properties. Presidium Gemstone Tester / Colored Stone Estimator is the only colored gemstone thermal tester in the industry. It provides a quick and easy way to identify diamonds and separate common colored gemstones from one another based on their thermal conductivity. Coated gemstones can also be generally tested with the PGT/CSE. The Presidium Gem Tester / Colored Stone Estimator has a retractable probe tip that ensures consistent pressure against the gemstone d