If you really want to be positive, you need to go electronic. Commercial pen-size probes, called simply "diamond testers," can test the thermal conductivity of your gem. However, moissanite ...

Although to become an expert is the development of a special gift through years of experience, there are a few simple tests which will aid a buyer of diamonds." "One test is to prick a needle hole ...

One of the jeweller’s TikToks shows a child bringing in his mother’s jewellery -- just to see the diamond testing pen in action. Despite being an introvert, and not even that interested in ...

Synthetic Moissanite (SiC) and cubic Zirconia (ZrO 2) are the most commonly known diamond counterfeits. Zirconia can be easily detected by the commonly used “thermal pen test” but Moissanite could ...