RI Test Range:1.30 to 2.99RI
Power Input: 9V Battery
Work Tempreature: 25-28oC
Quartz: 1.544-1.558RI
Topaz: 1.63-1.64RI
  • Description

The Digital Gem Refractometer GDR800 is a nice optical instrument which will give a reading of the refractive index of a clean, flat, well-polished facet to reproducibility of 0.007RI index units. With covering the full range from 1.30 to 2.99RI, It is an ideal instrument to identify the gem stones. The importance is that it can test the gem stones without requiring ANY messy, damaging contact oil.

-RI Test Range:1.30 to 2.99RI
-Power Input: 9V Battery
-Work Tempreature: 25-28oC

*Refractive Index of Some Gemstone

-Quartz: 1.544-1.558RI

-Topaz: 1.63-1.64RI

-Ruby: 1.74-1.78RI

-Cubic Zirconia : 2.15-2.18RI

-Diamond: 2.37-2.46RI

Telephone : 0086-0596-2292900
Fax : 0086-0596-2621858
Address :Jinle Rd.,Beidou Industrial Park,Jinfeng Development Area,Xiangcheng Dist., Zhangzhou, Fujian, China (Mainland) E-mail:
Sales Director
Phoebe Wu

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