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💎 Spot the real sparkle, anytime, anywhere!
The HMKIS Diamond Tester Pen combines high-accuracy thermal conductivity technology with a 60X LED magnifier to quickly and safely distinguish real diamonds from simulants like cubic zirconia. Designed for both novices and experts, this compact, pocket-sized device offers audible and visual alerts, easy calibration, and a durable faux leather pouch for on-the-go professional gem inspection.









| ASIN | B08MTG5NHJ |
| ASIN | B08MTG5NHJ |
| Batteries | 1 9V batteries required. (included) |
| Best Sellers Rank | 206,109 in DIY & Tools ( See Top 100 in DIY & Tools ) 1,979 in Electrical Tools & Testers |
| Brand | HMKIS |
| Colour | Black |
| Customer Reviews | 4.1 4.1 out of 5 stars (7,877) |
| Customer reviews | 4.1 4.1 out of 5 stars (7,877) |
| Delivery information | We cannot deliver certain products outside mainland UK ( Details ). We will only be able to confirm if this product can be delivered to your chosen address when you enter your delivery address at checkout. |
| Global Trade Identification Number | 09070190994879 |
| Is discontinued by manufacturer | No |
| Item Dimensions | 25.8 x 5.5 x 3.5 centimetres |
| Item Weight | 120 Grams |
| Item model number | HXK+FDJ |
| Lower Temperature Rating | 10 Degrees Celsius |
| Manufacturer | HMKIS |
| Manufacturer | HMKIS |
| Manufacturer Part Number | HMKIS |
| Measurement Type | Thermal Conductivity Scale (1-9) |
| Minimum Operating Voltage | 6 Volts |
| Model Number | HXK+FDJ |
| Power Source | Battery Powered |
| Product Dimensions | 25.8 x 5.5 x 3.5 cm; 120 g |
| Specification Met | Accurate and reliable reading, Easy calibration for stones of different sizes |
| Style Name | Compact |
| Upper Temperature Rating | 30 Degrees Celsius |
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