








💎 Unleash Your Inner Gemologist with Precision Testing!
The Diamond Tester Pen by Gain Express Holdings Ltd. is a portable electronic tool designed for high-accuracy gemstone identification. It can quickly distinguish diamonds and moissanite from imitations, operates on multiple power sources, and features a compact design for easy transport. With a user-friendly interface and audible alerts, this tester is perfect for both professionals and enthusiasts.







| Manufacturer | Gain Express Holdings Ltd. |
| Part number | DMT-3 |
| Item Weight | 65 g |
| Product Dimensions | 22 x 5 x 11.99 cm; 65 g |
| Batteries | 3 AAA batteries required. |
| Item model number | DMT-3 |
| Colour | black |
| Style | Compact |
| Power source type | Battery Powered |
| Item Package Quantity | 1 |
| Special Features | Designed for quick, precise, & safe diamond testing. Fine elastic tip probe for testing and stone identify as small as 2pt , Distinguishing real diamonds from fake ones. Emits audible sounds to easily differentiate the readings. |
| Batteries included? | No |
| Batteries Required? | No |
| Battery Cell Type | Alkaline |
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