Presidium Gem Tester II Saw Blades Bulk Discount Set in a round brass

Set in a round brass frame

Secures 3" diameter hose in a fixed

The short length is intentional — pavé holes are relatively shallow

Suitable for sanding and smoothing metal

MH-120 high torque handpiece delivers more than twice the torque of the standard Foredom H

Presidium Gem Tester II Saw Blades Bulk Discount Set in a round brassIs it a diamond or moissanite? Ruby or garnet? Sapphire or tanzanite? Emerald or jadeite? The Presidium Gem Tester II (PGT II) provides fast, laboratory proven answers for jewelers and gemologists working with both mounted and loose stones. This professional grade color stone estimator eliminates human error in gem identification by measuring the rate at which different gemstones conduct heat a physical property unique to each stone type. Simply touch