Presidium® Gem Tester II

The 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.

• Detachable probe pen with 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.
• Can differentiate between 15 types of gemstones.
• Built-in diamond and simulant test discs for reference.
• 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.
• Simple and easy to use.
• Runs on batteries.
• 2 x AAA alkaline batteries (approximately 3 hours of continuous use).