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 Post subject: Re: Please help to recognize this gem.
PostPosted: Sun Aug 11, 2019 7:50 pm 
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chamillion wrote:
Mostly, I guess that This gem is Chamillion Diamond.


I would guess that this gem is NOT a chameleon diamond.
Do I have psychic ability? No. Just decades of experience in identifying gems.


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 Post subject: Re: Please help to recognize this gem.
PostPosted: Sun Aug 11, 2019 9:53 pm 
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Chamillion, are you sure you know what a chameleon diamond is? It isn't just the color range.

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 Post subject: Re: Please help to recognize this gem.
PostPosted: Sun Aug 11, 2019 11:50 pm 
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Find a jewelry store with a thermal diamond tester.
A chameleon diamond will test as a diamond.


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 Post subject: Re: Please help to recognize this gem.
PostPosted: Mon Aug 12, 2019 2:38 am 
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Barbra Voltaire wrote:
Find a jewelry store with a thermal diamond tester.
A chameleon diamond will test as a diamond.

Are you sure ? Chamillion diamond react as a normal diamond ? Chamillion diamond changes its color instead of heat transfer. when heat gets.


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 Post subject: Re: Please help to recognize this gem.
PostPosted: Mon Aug 12, 2019 2:39 am 
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https://www.google.com/search?q=chamele ... QhLoyISALM:


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 Post subject: Re: Please help to recognize this gem.
PostPosted: Mon Aug 12, 2019 2:52 am 
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https://blog.arpegediamonds.com/the-9-m ... s-answered


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 Post subject: Re: Please help to recognize this gem.
PostPosted: Mon Aug 12, 2019 2:54 am 
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What causes the change in color?
We are certain that this question has been on your mind since the title, but in all honesty gemologists are still not 100% certain as to what causes these diamonds to change their color; there are however theories.

The first is the theory of “thermochromism”, where the stone changes its color as a response to heat.
The second is the theory of “photochromism”, where the stone alters hue in response to light.


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 Post subject: Re: Please help to recognize this gem.
PostPosted: Mon Aug 12, 2019 4:01 am 
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The second video says "Diamond from Sri Lanka".
I think there are more chameleons (chamillions ???) than diamonds in Sri Lanka.
Neither the look nor the color or the cut or the brilliancy makes me think of a diamond anyway.


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 Post subject: Re: Please help to recognize this gem.
PostPosted: Mon Aug 12, 2019 5:59 am 
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Isi wrote:
The second video says "Diamond from Sri Lanka".
I think there are more chameleons (chamillions ???) than diamonds in Sri Lanka.
Neither the look nor the color or the cut or the brilliancy makes me think of a diamond anyway.

People in gem fields in the world do not know yet exactly where chamillion diamonds found. They can say only guessing most of them found in India in the past. Srilanka is near India. So srilanka also may find that diamond. Srilankan find now gold also even they did not mine in past. Srilanka has diamonds also. But giving priority to sapphires, due no knowledge about diamonds, they sell it as white sapphires. Although srilanka has valuable gems, But Gem people are not experts. That is why Gem merchants come from abroad to srilanka get richer than srilankan people.


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 Post subject: Re: Please help to recognize this gem.
PostPosted: Mon Aug 12, 2019 6:11 am 
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You want that stone to be a diamond, or for some reason you want us to believe that it is.
But we don't, so that's it.


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 Post subject: Re: Please help to recognize this gem.
PostPosted: Mon Aug 12, 2019 6:27 am 
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Isi wrote:
You want that stone to be a diamond, or for some reason you want us to believe that it is.
But we don't, so that's it.

I try to know what is this gem exactly. For that I try to get idea from these forums and from the internet also. Unfortunately srilankans experts also fails to give identification to this gem, They have no experts for higher refractive values.


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 Post subject: Re: Please help to recognize this gem.
PostPosted: Mon Aug 12, 2019 6:44 am 
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There must be one or several good gem labs in Colombo. Take your stone to one of them.


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 Post subject: Re: Please help to recognize this gem.
PostPosted: Mon Aug 12, 2019 11:27 am 
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I am quite certain a thermal diamond tester will identify a chameleon diamond as diamond.
I've worked with them in the past.
As Isi said, YOU want this stone to be a diamond and we, as experts in our field, assure you it is not.

For positive identification you must bring it to a lab or individual who has more sophisticated instrumentation and know how to properly interpret the results the instruments give them.


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 Post subject: Re: Please help to recognize this gem.
PostPosted: Mon Aug 12, 2019 2:22 pm 
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Barbra Voltaire wrote:
I am quite certain a thermal diamond tester will identify a chameleon diamond as diamond.
I've worked with them in the past.
As Isi said, YOU want this stone to be a diamond and we, as experts in our field, assure you it is not.

For positive identification you must bring it to a lab or individual who has more sophisticated instrumentation and know how to properly interpret the results the instruments give them.

o-k , boss, Please can you show me in the internet, any title Chamillion diamond tested by thermal diamond tester , any where in the internet title. Chamillion diamond has H2 considerably and N gas also which are not heat conductors well.


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 Post subject: Re: Please help to recognize this gem.
PostPosted: Mon Aug 12, 2019 3:15 pm 
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I've personally tested them with thermal testers, and Raman photoluminescent spectroscopes.
Positive results: diamond.
No more diamond links...it is NOT a diamond.
I don't trust your ability with a refractometer.

Unless you post the following pictures:
-Gem in daylight, face up position well focused. No more videos.
-The refractometer you are using with light source and RI liquid

Do not bother to post again unless you supply what I have asked for. If not, your posts will be removed


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