Gem Tester Gemstone Tester for All Stones 22×11×8 Rhg181 1.30-1.81 Professional Gemstone Ldentification Gem Refractometer

Specification: Condition: 100% Brand New Item Type: Refractometer Material: ABS Refractive Index Range: 1.30-1.81 RI Color: As Pictures Shown Size

【Professional Design】This refractometer is specially designed to measure the refractive index of gemstones and solid materials. The minimalist design

Gem Portable Refractometer, RHG181 1.30-1.81 Presidium Gemstone ldentification Tester for Jewelry, Gold ＆ Silver and Diamond, Lab Refractometers

RHG181 1.30-1.81 Professional Gemstone ldentification Gem Refractometer High Quality Measure Refractive Index Gems Value - AliExpress

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