Diamond Tester Professional Diamond Tester Pen with UV Light, Jewelry Gem Tester Pen，Portable Electronic Diamond Checker Tool，Professional Diamond Selector for Novice and Expert

This professional diamond tester pen is an essential tool for both novice gemologists and experienced jewelers.

The built-in UV light adds versatility to your authentication process, helping distinguish between various gemstones. The tester includes a sensitivity adjustment feature and comes with a 9V battery for immediate use.

Its sleek black housing is both durable and professional-looking, while the ergonomic design allows for precise testing of even small stones. It has dual functions and is nondestructive.

Whether you're examining loose stones or mounted jewelry pieces, this tester helps provide reliable results.

Perfect for jewelry stores, pawnshops, or personal use, this tool helps build confidence in your gem authentication process.

High Accuracy and portability are what we pursue all the time, we've been working on it to becoming your precision stewards.

Specifications:
Probe Warm-up Time: about 25sec
Working Time: about 5 hours for continuous use
Suggested Working Temperature: 18°C to 30°C
Size: 168 x 31 x 21mm
Net weight: 55g
Working Voltage: 1 x 9V, 6F22 battery (included the set) or AC adaptor 110V-240V, DC 9V

Set includes:
1 x Diamond Tester Set
1 x English Instruction Manual