Gem Refractometers

Presidium Gem Refractive Index Meter II digital Gem refractometer Model：Refractive Index Meter II This digital refractometer is a supplement to the conventional refractometer. It mainly measures gemstones with a refractive index greater than 1.79 (such as diamond, CZ, Moissanite, etc.). The gemstones with a...

Gemological refractometer Model:FGR-002A Specifications: High hardness Synthetic CZ test prism Scale range:1.35-1.85                     Acurracy: ≦±002    Stainless steel table,corrosion-resistant,easy to clean              Professional optical design,shadow edge is ultra-straight and clear,easy to read; and Internally installed the monochromatic light (wavelength:589.5nm)  There are two ways of...

Gemological refractometer Model:FGR-002 Specifications: High hardness Synthetic CZ test prism Scale range:1.35-1.85                     Acurracy: ≦±002    Stainless steel table,corrosion-resistant,easy to clean              Professional optical design,shadow edge is ultra-straight and clear,easy to read; and Internally installed the monochromatic light (wavelength:589.5nm)  There are two ways of...

Refractive Index is one of the most important optical parameters used to identify and authenticate polished precious and semi-precious gemstones. Gem refractometer is the most important professional tool for identifying gem stones.It can test the gem refractive index easy,fast,and without spoilage,it can also determine other optical characteristics of gemstones.

Gemological refractometer Model:FGR-002J Specifications: The narrow and tall cubic zirconia (CZ) test prism can measure inlaid gemstones, which is especially suitable for jewelry inspection stations. Scale range:1.35-1.85                     Acurracy: ≦±002    Stainless steel table,corrosion-resistant,easy to clean              Professional optical design,shadow edge is ultra-straight and...

Gemological refractometer Model:FGR-003A  Specifications: High hardness Synthetic CZ test prism Scale range:1.35-1.85                     Acurracy: ≦±003 Aluminum alloytable,easy to clean             Professional optical design,shadow edge is ultra-straight and clear,easy to read; and Internally installed the monochromatic light (wavelength:589.5nm)                 ...