RHG-181 Gem Refractometer w/ Built-in Light Source + RI Oil

Offer you a quick and easy method of identifying and/or authenticating your most precious gems.

The RHG-181, commonly known as Gemstone Refractometer, is the primary and most powerful tool in identify and authenticate polished precious and semi-precious gemstones and observing the optical properties and the structure of gemstones. With the aid of Contact liquid (RI Fluid), that will create an optical contact between the glass and the gemstone, you can measure or test the Refractive Index of faceted stones, transparency or opacity, and its beauty, durability and scarcity. The refractive index (RI) of a gemstone provides the single most important piece of information to a gemologist seeking to identify an unknown stone. Due to its chemical composition and crystallization structure, each gem has a typical refractive index. In fact, you can also use this tool to measure R.I. for many minerals in crystal form as long as the crystals have a flat and polished face. Through these parameters, you can determine whether the gem is a Single Refraction (Isotropic) or Double Refraction (Anisotropic or Birefringence).

Key Features:

1 Year WarrantyHeavy-duty and built to lastConvenient & easy to carryBuilt-in Light Source that makes it a carry-and-use-it-anywhere device Comes with Automatic Temperature Compensation (ATC) that let itself adjust to the climateApproved by strict quality and safety standards, undoubtedly durable, very reliable and assures accurate testing results Comes with 3 pieces AG13 batteries, carrying case, polarizing filter, index oil, index reference list and user's manual

Specifications:

Measuring Range : 1.30 - 1.81 RI Minimum Graduation : (RI) 0.01 RI Illumination : Internal Light Source with momentary/power switch Dimension : 35mm x 63mm x 115mm Scale Division : 0.01 nD Weight : 0.4 kg Ranges of Application : Laboratory, Gemology Filter : Polarizing filter Power Source : 3 x 1.5V AG13 button batteries Color : Black

Accessories included:- One bottle of 1.800 Refractive Index Oil

- Polarizing Filter

- 3 pieces 1.5V AG13 Batteries

- Carrying Case

- Refractometer Index Reference List (For 77 common gemstones, i.e. Calcite, Jadeite, Quartz etc.)

- User's Manual

RHG-181 Gem Refractometer w/ Built-in Light Source + RI Oil