Very practical thing! Now You can with certainty see what is real diamond and what is fake. I try it on my wife rings and necklaces with real stone and fake one and instrument was correct in 100%.I try it on my watch collection to see if tester can tell what is sapphire glass and what is ordinary mineral glass, with my surprise "tester" is very accurately so the difference between two type of watch glass!Now nobody can sell me a watch with "sapphire Cristal" because it is very easy to tell the difference with this tester!I will highly recommend this diamond tester, because is very accurate and is very easy to use.
1. The thermal conductivity meter is an electronic instrument designed and manufactured according to the thermal conductivity of diamonds to identify the true and false of diamonds. 2. This instrument is a precision electronic instrument, the use environment is 5 - 35 degrees Celsius, and the air relative humidity is 80 pct. 3. The tested gem must be clean, dry and at room temperature. Technical characteristics: 1. Pocket portable handheld. 2. Non-destructive testing, easy and accurate operation. 3. Working power: DC9V battery ( not included )
Dimensions and Weight
Product weight: 0.1600 kg Package weight: 0.2000 kg