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💎 Test Like a Pro, Shine Like a Boss
The GAIN EXPRESS Diamond Tester Pen is a professional-grade gem tester combining UV fluorescence and thermal sensors to accurately distinguish natural diamonds from simulants like moissanite and cubic zirconia. Designed for both novices and experts, it features a compact, battery-efficient design with audible metal contact alerts and includes a full accessory kit for precise, on-the-go gemstone verification.








| ASIN | B00MNEB0U0 |
| Batteries Required? | No |
| Batteries included? | No |
| Battery Cell Type | Alkaline |
| Battery description | Batería 9v |
| Best Sellers Rank | 136,431 in DIY & Tools ( See Top 100 in DIY & Tools ) 271 in Multi Testers |
| Customer Reviews | 3.8 3.8 out of 5 stars (178) |
| Date First Available | 5 Sept. 2014 |
| Guaranteed software updates until | unknown |
| Item Package Quantity | 1 |
| Item Weight | 150 g |
| Item model number | JEM-II |
| Manufacturer | Gain Express Holdings Ltd. |
| Part Number | JEM-II |
| Power Source | Battery Powered |
| Product Dimensions | 17.78 x 7.62 x 5.08 cm; 149.69 g |
| Style | Compact |
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