Presidium Gem Tester II

Presidium Gem Tester II – Identify Diamonds & Colored Gemstones with Confidence

The Presidium Gem Tester II (PGT II) is a trusted tool for jewelers, gemologists, and enthusiasts, offering a fast and reliable way to identify diamonds, moissanites, and distinguish up to 16 common colored gemstones based on thermal conductivity.

→Ruby, sapphire, emerald, garnet, amethyst, citrine, tourmaline, topaz, spinel, alexandrite, peridot, tanzanite, zircon, aquamarine, chrysoberyl, and iolite.

This second-generation model features a compact and sturdy design, improved portability, and a newly redesigned built-in calibration reference for ease of use in both indoor and outdoor environments.

Key Features:

• Retractable thermoelectric probe tip ensures constant, gentle pressure during testing
• Industry’s thinnest probe (0.6mm) allows testing of gemstones as small as 0.02 carats
• Clear analog dial for quick and accurate readings
• Metal alert buzzer signals proper contact with the stone
• Differentiates between 16 common gemstones, including diamonds and moissanites
• Built-in calibration and glass test discs for accuracy and reference

Benefits:

• Instantly identifies diamonds, moissanites, and many colored gemstones
• Accurate testing on both polished and unpolished stones
• No waiting time between tests
• Compact and portable – ideal for use in-store, on-site, or at trade shows
• Operates on 2 AA batteries or via the included power adapter

Please note: This device does not differentiate between natural and synthetic colored gemstones.

Specifications:

• Power: 2 × AA batteries or AC adapter (included)
• Operating Temperature: 18°C – 27°C
• Dimensions: 125mm (L) × 90mm (W) × 70mm (H)
• Weight: 220g (without batteries)