Push the battery lid open,put a 9V battery into the case turn the power switch to [on], start READY window of the tester, the green light is shown,so the tester can be put into use, the wethod is as follow.
eBay
This gem tester tool is not only a diamond tester, but also a multi gem tester. It can detect if a gemstone is real or fake, including: diamond, sapphire, ruby, crystal, agate, jadeite, and other gemstones of various sizes.
eBay
Testing platform for loose stones. Non-destructive testing, easy and accurate operation. Technical characteristics The gemstones to be tested must be clean, dry and at room temperature.
eBay
Thailand smart Pro gem eye I Diamond Tester / diamond hardness test.
eBay
Diamond Selector II Gold Testing Kits Gem Pen Gemstone Jewelry Tester Tool,Portable Electronic Diamond Tester Pen Jewelry Selector LED for diamond, sapphire, ruby, crystal, agate, jade, gems multi gemstone precious stones hardness test tool, Diamond Selector II V2.
eBay
Click here to see description.
eBay
1 x Diamond selector II tester (without battery). 4PCS New Diamond Tester Gemstone-Testing Kit~Digital Electronic Test UK FF~. 1 x Testing Platform. 1 x Protected bag. We are committed to provide a safe and convenient way to trade.
eBay
This is the first and only one step dual tester. This new revolutionary design is unmatched in performance and ease of use. The entire test takes only ONE second and then you know for sure if it\'s diamond, other artificial diamond, or a genuine diamond.
eBay