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 Post subject: New tool - GemPen
PostPosted: Sat Sep 01, 2018 2:39 am 
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Has anybody here further informations about a new tool called GemPen?

V. Pardieu posted this on instagram.

https://gemometrics.com/product/gempen/

To my understanding it is able to check diamonds, rubies, sapphires and emeralds. Treatments and whether natural or synthetic.

Using UV...

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 Post subject: Re: New tool - GemPen
PostPosted: Sat Sep 01, 2018 12:43 pm 
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I'd love to hear more....especially limitations.
SW UV, I suspect is used here.


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 Post subject: Re: New tool - GemPen
PostPosted: Sat Sep 01, 2018 3:00 pm 
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Wow , a four thousand euro UV light. What a country!


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 Post subject: Re: New tool - GemPen
PostPosted: Sat Sep 01, 2018 5:35 pm 
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I would assume it was UV spectroscopy like the EXA, but they don't give many details. I know that the MAGI fellas have been investigating its use on colored stones. Aside from the lack of details, though, their lack of any hedging on its ability to distinguish synthetics seems really questionable, certainly not what I'd expect from a credible company presenting a device like this.

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 Post subject: Re: New tool - GemPen
PostPosted: Sat Sep 01, 2018 5:39 pm 
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ditto


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 Post subject: Re: New tool - GemPen
PostPosted: Sun Sep 02, 2018 2:56 am 
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Following discussion on FB, I really about then it's something more than an intensive UV source with battery (there is no any type of screen or indecision about scans). All claimed identification based on UV fluorescence/PL effect. It's also true for EXA, there are applications where the high-intensity light source has been very handy: for example, oiling, but spectroscopic capabilities make EXA very powerful in the hands of an expert.


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 Post subject: Re: New tool - GemPen
PostPosted: Mon Sep 03, 2018 5:22 pm 
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It appears they will be at a show this week: (from facebook:)
Don’t forget to come and meet us at IJL Olympia London (2 – 4 September) at booth Q52!

If anyone is there and can try it out, it would be interesting to report back how well it works.


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 Post subject: Re: New tool - GemPen
PostPosted: Tue Sep 04, 2018 8:34 am 
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I will be around and check that out in Hong Kong during their global launch at the JMA show at the end of November. I may get a press pass from a friend to enter the show as her family owns a jewelry magazine in Hong Kong :wink:

If they are using strong UV on a handheld device without any warning signs of “may cause cancers or blindness”, they are asking for legal issues. A compliance of certain regulations written on the manual could also be a telltales of what technologies they are using.


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 Post subject: Re: New tool - GemPen
PostPosted: Tue Sep 04, 2018 1:23 pm 
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:lol: If the manufacturer is claiming this device can identify things it can't really positively identify they are asking for legal issues.


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 Post subject: Re: New tool - GemPen
PostPosted: Tue Sep 04, 2018 2:01 pm 
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„Don’t use this laser sword in planes, trains, busses and public places.“

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 Post subject: Re: New tool - GemPen
PostPosted: Tue Sep 04, 2018 2:19 pm 
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I am usually pretty flippant about "health and safety" issues.
But in physics UV is not called UV light it is UV radiation. And shortwave will give you a sunburn surprisingly quickly.
This is why deuterium and xenon UV sources need to be in properly designed containment vessels.
It would not be difficult to avoid such UV burns but depending on the end user, to be careful, does not strike me as a legally defensible position. You can just hear a trial lawyer asking , "how does this prevent a child from looking into it?"


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 Post subject: Re: New tool - GemPen
PostPosted: Tue Sep 04, 2018 7:38 pm 
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A brief (brief being an understatement) of usage of this gizmo.
The first quest I'd ask is would a natural Type 2 diamond fluoresce too? If not, why not.


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 Post subject: Re: New tool - GemPen
PostPosted: Tue Sep 04, 2018 8:27 pm 
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Hmm... exactly backwards from the demo I got from Magi at Tucson, if I am remembering correctly. That is odd.


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 Post subject: Re: New tool - GemPen
PostPosted: Wed Sep 05, 2018 11:49 pm 
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My question would be why the natural diamond shows no fluorescence- which type...

I have many diamond - small fancy, some maybe treated, which show strong LW fluorescence ( blue, greenishyellow, orange...) - will they show no fluorescence with lamp??

From this demonstration it is only a UV lamp...

Many questions...

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 Post subject: Re: New tool - GemPen
PostPosted: Thu Sep 06, 2018 2:32 am 
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Hmm curious.
Interesting for me is the fluorescence effect as it comes late. He is pointing with the device on the first stone and it needed some time, that a reaction is visible. Could be that the UV-light was activated a little bit later, but the effect was getting slowly more intense in my opinion. So weird reaction in my opinion.
So for me interesting how this could show berillium treatment on saphires? Is there any known possibility to show this with UV? I havent heard of something like this or am I missing something?
Some many questions. If this device is capable doing these identifications it would be a nice handy device for buying and selling trips...

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