Presidium PGI Gem Indicator Belt Sanding These heavy-duty ring bending pliers

These heavy-duty ring bending pliers are made in Germany and designed for serious bench work

long-lasting plate

For drawplates with individually marked and calibrated hole diameters

where tarnish removal is needed—a task ultrasonics are not designed to perform

Presidium PGI Gem Indicator Belt Sanding These heavy-duty ring bending pliersThe 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