Presidium Gem Tester II Saw Blades Bulk Discount 950mm (37-3/8 in) working length

950mm (37-3/8 in) working length accommodates long draw runs

Pressure Gauge Clock 160 PSI

and composite materials

The short length is intentional — pavé holes are relatively shallow

Secures 3" diameter hose in a fixed

Presidium Gem Tester II Saw Blades Bulk Discount 950mm (37-3/8 in) working lengthIs 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