Gslxheal Gem Tester | Gem Tester for All Stones, RI 1.30–1.81 Jewelry Refractometer, Portable Gemstone Tester, for Measuring The Refractive Index Jewelry Test Tool

Gslxheal Gem Tester | Gem Tester for All Stones, RI 1.30–1.81 Jewelry Refractometer, Portable Gemstone Tester, for Measuring The Refractive Index Jewelry Test Tool

• [Instant Auto‑Calibration & Readout]This gem refractometer auto‑calibrates and instantly displays RI 1.30–1.81—no manual tweaks. As a lab refractometers portable tester and gemstone tester, it delivers fast, reliable gem ID anywhere.
• [Pocket‑Sized Field Analyzer] Our gem tester for all stones slips into your gear. Equipped with LED flashlight and 3 ml refractive oil, this presidium gem tester is ready for on‑the‑go gemstone verification.
• [Precision RI Measurement] Advanced refractometer gemstone technology offers 0.01 ri resolution. Use this gem refractometer to accurately differentiate uniaxial vs. biaxial crystals and phototropic properties.
• [Crystal & Phototropic Profiling] As a refractometer gem, it identifies positive vs. negative phototropism, uniaxial/biaxial behavior, and determines optical characteristics—ideal for gemstone tester for all stones professional use.
• [Rugged, Versatile Design]Built like a jewelry instrument gem density meter with a shock‑proof housing and low‑dispersion glass tabletop. Doubles as a refractometer sugar tool for fluid density testing in workshops or labs.