Presidium PGI Gem Indicator Belt Sanding This high-quality stainless steel diamond

This high-quality stainless steel diamond gauge is precision-engineered for measuring the carat sizes of round brilliant cut diamonds

Pallabrite™ Mirror is a maintenance-free

long-lasting plate

4-prong V-ends head for secure square stone presentation

8mm Prong Count 4 Construction Die Struck Karat 14K Tags Bands & Mountings

Presidium PGI Gem Indicator Belt Sanding This high-quality stainless steel diamondThe Presidium Gem Indicator (PGI) is the only handheld tester specifically designed for colored gemstones. Using advanced thermal conductivity technology, it can identify up to 31 different gem types and includes a color input function with 12 common gemstone colors for even greater accuracy. A clear digital LED screen ensures easy to read results, while the patented changeable probe tip delivers reliable, long term performance. The PGI is a