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Re-Polishing GIA Refractometer Hemicylinders

Photo of a refractomer.

We Can Make Your Refractometer Glass like NEW Again !

Before                        After

Photo of a refractometer glass which needs to be re-polished. Photo of a refractometer glass after it has been re-polished.

Refractometer glass can get scratched and pitted which makes it very difficult to get a good RI reading. New refractometers are very expensive. We are able to re-polish the top surface of the glass to make them like new again.

  • Can mine be done? 98% of the time re-polishing is possible. The hemicylinder can usually be re-polished twice and sometimes 3 times before needing to be replaced.

  • About our Process - Because we do not remove the hemicylinder during the repolishing process, the calibration of the unit does not change. We use a flat lap which leaves a flat surface rather than hand polishing which would leave an uneven surface.

  • Mini-lab refractometers - We can also repolish the smaller mini-lab units. Because these are more work than the Duplex II units, they cost a bit more to do. See our price schedule listed below.

  • Our record - We have successfully re-polished several hundred units over the years including many for gemology schools, including GIA.

  • Price :
  • Duplex II, $149 plus $22 for shipping.
  • Mini-lab units, $175 plus $22 for shipping.
  • Ask us about quantity rates if you need multiple units re-polished.
  • (The shipping cost will be somewhat more if we ship more than one unit.)
  • Shipping - Remove the lens and the cover from the unit prior to shipping.
  • Request a Signature - It is best to request a signature on our end so that they don't leave the package by our door if we aren't here.
  • Be sure to pack well prior to shipping. The units are fragile.

  • Address - Please call 303-745-9422 for our shipping address.

  • Questions? Feel free to call or Email us with any questions you may have.

Denton Anderson,
Gemologist & Gem Cutter
click photo for Video

Photo of Denton the gem cutter.

Graduate Gemologist, GIA, GG
Over 20 years of experience.