Diamond Tester:
The Prestige Series II Diamond Tester with state-of-the-art technology assuring quick- accurate readings to determine if a stone is a real diamond or a fake. 
Features include: 
Automatic and manual mode. 
Linear display for increased information. 
Adjustable gain for small stone sizes. 
Compensation for ambient temperature. 
Fast warm up time 
ten seconds!
Portable with one nine-volt battery (included). 
Auto shut-off with a push button switch. 
Unique new anti-fade circuit which compensates for stone heating. 
Low battery indicator for accurate readings. 
Multipurpose alarms: a. Beeps when ready. b. Metal alert. c. Beeps repeatedly when testing a diamond.

Size:162*48*22mm  

Weight: 177g