Gemological Refractometer Kit with Light - Portable Gemstone Testing Tool for Jewelers and Gemologists

Item Type: Portable Gemstones RefractometerMaterial: Glass, ABSProduct size:Approx. 128 x 60 x 32mm / 5.0 x 2.4 x 1.3inMeasuring Range: 1.30 to 1.81Minimum Division Value: 0.01Liquid: Refractive Oil (Shipped with Liquid)Flashlight Battery: 1 x 1.5V AA Battery (Shipped Without Battery)Weight: Approx. 590g / 20.8ozPackage List：1 x Portable Gemstones Refractometer1 x Flashlight1 x Refractive Oil1 x Box1 x User ManualNote:1.The refractive index of gemstones is a very important optical parameter. The gloss of the gemstones can be determined by this parameter. Since different gemstones have a fixed refractive index, all kinds of gems can be determined according to the refractive index. Birefringence can also be measured. This parameter can be used to determine whether a gemstones is uniaxial or biaxial.2.Shipped with liquid, shipped without battery.

• Quickly and accurately identifies single and double gemstones, helping to distinguish diamonds, moissanite, and more.
• size and compact design make it easy to carry anywhere. Features a clear display for easy reading.
• Measures the angle at which light is bent or refracted through a gemstone, a primary method of gemstone identification.
• Complete kit includes: 1 x Portable Refractometer, 1 x Flashlight, 1 x Refractive Oil, 1 x Carrying Case, 1 x User Manual.
• Widely used for identifying diamonds, moissanite, and other colored gemstones.