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💎 Don’t just test gems—own the confidence of precision!
The Presidium Instruments Gem Tester II (PGT II) is a compact, battery-powered thermal conductivity tester featuring Assisted Thermal Calibration (ATC) for enhanced accuracy. It boasts the industry's thinnest retractable probe tip and can reliably identify diamonds, moissanites, and 16 other common colored gemstones. Designed for professionals seeking portable, consistent, and easy-to-use gemstone verification.






| ASIN | B08M87J44P |
| Best Sellers Rank | #287,372 in Arts, Crafts & Sewing ( See Top 100 in Arts, Crafts & Sewing ) #90 in Jewelry Diamond Testers |
| Brand Name | Presidium |
| Color | Black |
| Customer Reviews | 4.1 4.1 out of 5 stars (423) |
| Item Dimensions | 4.5 x 3.8 x 7.8 inches |
| Item Weight | 0.54 kg |
| Manufacturer | Presidium Instruments |
| Measurement Type | Thermal Conductivity |
| Model | PGT-II |
| Number of Items | 1 |
| Part Number | PGTII |
| Power Source | Battery Powered |
| Specification Met | Yes |
| Style Name | Compact |
| Unit Count | 1 Count |
| Upper Temperature Rating | 27 °C |
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