Digital Refractometer-DR series
Gem Digital Refractometer R.I.=1.30-2.99
  • Gem Digital Refractometer R.I.=1.30-2.99
  • Gem Digital Refractometer R.I.=1.30-2.99

Gem Digital Refractometer R.I.=1.30-2.99

Item No.: GDR800
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The Digital Gem Refractometer CDI800 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.

 

Specification:
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 

 

 

 

Warranty and Guarantee:

 

 Offers 1 YEARS WARRANTY
If you are not satisfied when you receive your item, please return it within 14 days for a replacement or money back. Please contact me before you return it.

 

If item is defective in 3 months, We will send you a replacement without extra charger, or offer refund after we receive the defective item.

If item is defective after 3 months, you can still send it back to us. We will send you a new one after receiving the defective item. But you have to pay the extra shipping fee.