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Easy to Use: The Diamond Tester Pen is simple to operate. Just lightly touch the pen tip to the surface of the jewelry, and it will provide test results within seconds. Green light indicates a real diamond, while red light indicates the possibility of a synthetic diamond or other gemstone.
When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.