Digital Gemstone Refractometer,Digital Refractometer,Gem Tester,Refractive Index 1.300-3.000, with LCD Screens, Jewelry Tester Identification Tools for Jewelry, Gold ＆ Silver and Diamond

Gemstone Refractometer, Jewelry Tester Identification Tools with Large Lcd Backlight, Error: + -0.005/accuracy: 0.001/Refractive Index 1.300-3.000, for Test Jewelry①JadeGem refractometer is suitable for identifying polished finished products.Jade jade can be tested to determine whether the refractive index of jade isIt is in line with its numerical test of 1.66, and it is necessary to protect the jadeiteThere is a flat rough stone of at least 3mm②Hetian jadeGem refractometer is suitable for identifying polished finished productsHetian Jade can test whether the refractive index of Hetian Jade isIt is a rough stone that meets its numerical value of 1.61③JewelryGem refractometer is suitable for identifying various types of gemsstone, the number of refractions fixed by its various varieties of gemstonesThe value is used to determine whether the rough stone matches the characteristics of the gemstone.④DiamondDigital gem refractometer for identification of natural diamondsAnd artificial diamonds, the refractive index reaches 2.417However, diamonds with refractive index between 1.98-2.2 are all artificial.Diamond, also known as zircon▶Specifications:Measuring range: refractive index 1.300-3.000Measurement error: + -0.005Measurement accuracy: 0.001Battery life:10.000 TimesPower supply: 700mA Lithium BatteryProduct Size: 13.5x7.8x2.4cm(5.31x3.1x0.94inch)Net weight: 0.8kg(1.76lbs)▶Products include:1*Gemstone refractometer2*calibration block (1*1.487, 1*1.806)1*aluminum box1*instruction manual▶If you have any questions about our products, please feel to contact us and we will reply to you within 24 hours.

• 【Premium Construction Materials】: The diamond tester is crafted with hard aluminum alloy for scratch-proof work platforms, this instrument delivers robust structural integrity. This gem tester is enhanced with ABS engineering plastic power controls and triple-layer internal insulation, it ensures secure protection against electrical hazards.
• 【Clear Visual Reading】: Digital refractometer is featuring a large LCD screen with backlight illumination, a high-sensitivity sensor, and intelligent electronics, the device ensures excellent readability even in low-light conditions. Powered by a rechargeable 700mAh lithium battery, it supports up to 10,000 measurements per charge.
• 【Test Method】: Gemstone tester index testers do not oil is required, just bring the sample's measuring surfaces close to the measuring platform to measure. Based on this parameter, you can determine whether the gem is a uniaxial crystal or a biaxial crystal.
• 【Total Internal Reflection Technology】: Gemstone refractometer is utilizes fundamental optical principles where refractive index values serve as definitive indicators for material identification. Each reading provides reliable gem characteristic data.
• 【Wide Compatibility for Various Gemstones】: Gemstone identification tester suitable for both uniaxial and biaxial crystals, this jewelry calibration test tools quickly and accurately identifies single and double gemstones,including moissanite, diamond, colored gems, natural or synthetic stones, minerals, and other solid materials. This digital refractometer is designed for measuring the refractive index of gemstones and solid materials. A must-have for gemologists and serious collectors.