Jewelry Tester with LCD Screen ，Digital Gemstone Refractometer, | for Refractive Index 1.300-3.000, Identification Tool for Jewelry, Jade and Crystal

This gemstone refractometer is designed for measuring refractive index of gemstones. The jewelry tester identification tool provides non-destructive testing for various stones. The gem refractometer is intended for use in jewelry identification and assessment.Key FeaturesMeasurement Range: Designed for various refractive index valuesAccuracy: Provides readings with specific toleranceDisplay: LCD screen with backlight for visibilityPortability: Compact size for easy handlingSpecificationsProduct Name: Gemstone Refractometer / Jewelry TesterMeasuring Range: 1.300-3.000Measurement Error: Within a specific toleranceMeasurement Accuracy: Within a specific rangeBattery Life: Designed for extended usePower Supply: Rechargeable lithium batteryProduct Dimensions: 13.5 x 7.8 x 2.4 cm (5.3 x 3.1 x 0.9 inches)Net Weight: 0.8 kg (1.8 lbs)Design and FunctionThe gemstone refractometer features a large LCD screen for readings. This gem refractometer is designed for testing polished finished products. The jewelry tester identification tool can be used for jade, Hetian jade, and various gemstones.Package Includes1 x Gemstone Refractometer2 x Calibration Blocks (1.487 and 1.806)1 x Aluminum Box1 x Instruction Manual

• Gem Refractometer for Jewelry Testing：This gem refractometer is designed for measuring refractive index of gemstones. The jewelry tester identification tool provides non-destructive testing for various stones. The device is intended for use in gemology and jewelry assessment.
• Aluminum Alloy Construction for Testing：The refractometer is constructed with aluminum alloy materials. This gemstone tester features a scratch-resistant work surface for stability. The gem refractometer includes ABS components and insulation features.
• Measurement Range and Accuracy：The gemstone refractometer measures refractive index within a certain range. This jewelry tester provides readings with specific accuracy. The gem refractometer can help identify optical characteristics of gemstones.
• Operation for Sample Testing：The gemstone tester operates without refractive oil during use. This gem refractometer allows samples to be placed near the measuring platform. The jewelry tester identification tool is designed for straightforward operation.
• Applications for Gem Identification：The gem refractometer is suitable for identifying diamonds, moissanite, and colored gemstones. This gemstone tester can be used for single and double refractive stones. The jewelry tester is intended for measuring solid materials.