High-Precision Digital Gem Refractometer 1.3–3.0 RI

★ Struggling to verify gem authenticity or distinguish diamond from moissanite?Our High-Precision Digital Gem Refractometer delivers laboratory-grade identification in a portable device—no oil, no damage, just accurate, repeatable results wherever you are.★ Product Features:Oil-free operation: Place gem directly on test platform for instant, non-destructive measurement.Wide RI range: 1.300–3.000 with 0.001 resolution and ±0.005 measurement error.Accurately identifies diamonds (RI 2.417), cubic zirconia, moissanite, jadeite (≈1.66), nephrite (≈1.61), and colored gemstones.High-precision internal reflection sensor ensures scientific reliability.Backlit LCD display for clear reading in any lighting.700mAh rechargeable battery lasts for 10,000+ tests.Compact (135×78×24mm), lightweight (250g) aluminum alloy housing—durable and travel-ready.★ Product Details:Name: High-Precision Digital Gem RefractometerMeasurement Range: RI 1.300 – 3.000Resolution: 0.001 | Accuracy: ±0.005Battery: 700mAh Rechargeable Li-ionDisplay: Backlit LCDHousing: Aluminum Alloy + ABS SwitchesDimensions: 135 × 78 × 24 mmWeight: 250gCalibration Blocks: 1.487 & 1.806★ Packing List:Digital Gem Refractometer × 1Calibration Blocks × 2Aluminum Storage Case × 1Anti-Static Tweezers × 1User Manual × 1(Note: Always calibrate before use for optimal accuracy.)

• 【High-Precision 1.3–3.0 RI Range】Measures refractive index from 1.300 to 3.000 with 0.001 resolution and ±0.005 error—ideal for identifying diamonds (RI 2.417), moissanite, jadeite (1.66), and more.
• 【Oil-Free & Instant Testing】No messy refractive oil needed—just place your gem on the platform. Includes calibration blocks (1.487 & 1.806) for immediate, lab-grade accuracy.
• 【Professional Gem Identification】Uses internal reflection principle and high-precision optical sensor to deliver scientific, non-destructive analysis trusted by jewelers and appraisers.
• 【700mAh Battery – 10K+ Tests】Rechargeable battery supports over 10,000 measurements. Perfect for fieldwork, stores, labs, or collectors needing reliable long-term use.
• 【Durable & Pocket-Sized】Aluminum alloy body is scratch- and corrosion-resistant. Weighs only 250g with backlit LCD and insulated ABS switches for safe, clear operation anywhere.