Once our Diamond Tester Pen has completed all of its tests, the pen will make a beep sound as well as show a row of fully lite LED lights. 【Simple to Use】Yhkj Diamond Tester Pen is simple to operate ...

Testing diamonds has become a difficult science when the competition may outsparkle it, as does moissanite, or even call itself a diamond, such as lab-grown ones do. But now there are ...

Unsure of whether your sparkler is a synthetic? Turn to one of these methods to check. Reviewed by Sandy Ip When you're first examining your own diamond or that of a loved one, you may take notice of ...

The International Institute of Diamond Grading & Research (IIDGR), part of De Beers Group, has introduced an advanced synthetic screening device which allows users to test greater volumes of jewellery ...