Post subject: Use of polariscope in Gem ID course?
Posted: Mon Sep 03, 2018 7:23 pm
Established Member
Joined: Tue Apr 15, 2014 10:04 pm Posts: 27
I notice polariscope was removed from Gem-ID student package. When I search the word “polariscope” in GIA’s web store, only the accessories shows up. Did GIA removed the use of polariscope in the current Gem-ID process?
Post subject: Re: Use of polariscope in Gem ID course?
Posted: Mon Sep 03, 2018 10:26 pm
Established Member
Joined: Tue Apr 15, 2014 10:04 pm Posts: 27
I was checking the polariscopes on eBay and saw a “Pro Gem Table Top Polariscope With Gem Clip” which I thought is pretty identical to what GIA was selling. When I checked GIA’s website, all polariscopes were removed.
Post subject: Re: Use of polariscope in Gem ID course?
Posted: Mon Sep 03, 2018 11:01 pm
Gold Member
Joined: Thu May 12, 2016 2:18 am Posts: 1542
I simply cannot imagine doing gem ID without a polariscope. The last set of courseware I saw just a couple of months ago still included the use of polariscopes as always. The good news is that unlike some other tools, a better quality Chinese made polariscope works just fine. Maybe GIA has discontinued them because of market forces. They have done that with some other tools like light sources.
Post subject: Re: Use of polariscope in Gem ID course?
Posted: Tue Sep 04, 2018 2:25 pm
Valued Contributor
Joined: Sun Mar 11, 2007 10:03 pm Posts: 341 Location: San Diego
A polariscope is still required, however when stock for specific testing equipment is unavailable or back ordered, they are removed from the student package page.
Students would either need to wait for new inventory or acquire this instrumentation elsewhere, however they still have the benefit of purchasing the rest of the equipment as a package if they wish.
I hope that helps
_________________ Paul Mattlin Senior Manager, Online Education Division
* My posts are my own and do not reflect the opinions or policies of my employer
Post subject: Re: Use of polariscope in Gem ID course?
Posted: Thu Sep 06, 2018 6:44 am
Established Member
Joined: Tue Apr 15, 2014 10:04 pm Posts: 27
Does anyone knows the difference between a polariscope and a Lens stress tester used in the optical/eyeglasses industry? A lower model of Lens stress tester (which looks exactly like a polariscope) is selling at US$49.99 on eBay (or US$20 on TaoBao.com in China).
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