Presidium Gem Tester II Saw Blades Bulk Discount Enables interior surface access on

Enables interior surface access on hollow forms such as vase bottoms

The Fretz H-2 Holder is not included and must be purchased separately for use with these insert stakes

Suitable for sanding and smoothing metal

The short length is intentional — pavé holes are relatively shallow

plastic media

Presidium Gem Tester II Saw Blades Bulk Discount Enables interior surface access onIs 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