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flowing lines around stones and beads
Magic indeed
distortion-free viewing
and PowerGraver series
118 Half Round 133
Presidium PDT Duo Tester-Identify Diamonds & Colored Stones Electroplating flowing lines around stones andThe Presidium PDT Duo Tester combines two distinct testing methods into a single professional instrument, giving jewelers and gemologists the tools needed to accurately identify diamonds, diamond simulants including synthetic moissanite and popular colored gemstones. Unlike a standard thermal tester alone, this unit simultaneously performs both thermal conductivity testing and digital reflectivity measurement through a single probe at the press of one
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