JEM-II Diamond Tester with Ultraviolet (UV) Light

This diamond selector remains unresponsive to materials like imitation crystals, or simulants like cubic zirconia, moissanite, and lab-grown diamonds,

This diamond selector remains unresponsive to materials like imitation crystals, or simulants like cubic zirconia, moissanite, and lab-grown diamonds, upon contact with the surface. It is the easiest answer for the vast majority of retail jewelers, pawn brokers, and chain stores when faced with the decision of which diamond selector to buy.

Gain Express JEM-II Diamond Tester with Ultraviolet (UV) Light

Gain Express Diamond Tester Pen, High Accuracy Jewelry Diamond Tester Professional Diamond Selector for Novice and Expert Jewelry Diamond : Arts, Crafts & Sewing

This Portable Digital Lux Meter with PC Interface can measure up to 200,000 lux. It is used for checking the level of luminance, the measure of the amount of light falling on a given surface. It applied in the fields of cinematography and scenic design, in order to determine the optimum light level for a scene, where they can help to reduce the amount of waste light used in the home, light pollution outdoors, and plant growing to ensure proper light levels.

Gain Express Digital Light Meter Lux Meter Measurement Range Detachable Sensor 0 to 200,000 Lux Min/Max/Avg Functions (with Data Record Function) + C

CE-7200A Stainless Steel 2.5L Ultrasonic Cleaner Heater Jewelry Watche – Gain Express

Diamond Tester with Ultraviolet (UV) Light —

Multi-parameter water quality tester measures Salinity, TDS, Specific Gravity (S.G.), and Temperature, all in one portable pen-type design tester.It's

WQM-354 Water Quality Tester 4-in-1 TDS Temperature S.G Salt Salinity

JEM-II Gain Express Diamond - GEM STONE PHilippines

Portable Diamond Tester high Accuracy Jewelry Gem Selector Testing Kit Pen – Tacos Y Mas

CE-7200A Stainless Steel 2.5L Ultrasonic Cleaner Heater Jewelry Watche – Gain Express