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 Post subject: Fake Rough Diamonds - GCI Report
PostPosted: Wed Jun 26, 2013 7:09 pm 
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Interesting article about fake rough Diamonds. Looks like someone has spent time engraving triangles on Topaz to make it look like a Diamond.

Being SR vs DR should be easy to detect, but if people are just going by visual appearance there is chance they could get confused.

http://gci-gemlabs.livejournal.com/5771.html


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 Post subject: Re: Fake Rough Diamonds - GCI Report
PostPosted: Wed Jun 26, 2013 7:53 pm 
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Wow. I gotta say, those are really impressive work--I'd love to have one.


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 Post subject: Re: Fake Rough Diamonds - GCI Report
PostPosted: Thu Jun 27, 2013 1:44 pm 
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i have seen phenakite as replica of rough diamond not colorless Topaz crystals as it says in this article.

actually i think making blue topaz by irradiating colorless topaz worth much more

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 Post subject: Re: Fake Rough Diamonds - GCI Report
PostPosted: Thu Jun 27, 2013 2:36 pm 
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I remember seeing a piece somewhere about synthetic white spinel crystals being sold as rough diamonds. They even displayed trigons but were inverted from diamond trigons -- the quick way to ID them. They have the "benefit" of being SR.

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 Post subject: Re: Fake Rough Diamonds - GCI Report
PostPosted: Fri Aug 01, 2014 12:38 pm 
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I know professional experienced cutters that have been caught by similar fakes.


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 Post subject: Re: Fake Rough Diamonds - GCI Report
PostPosted: Sat Aug 02, 2014 4:27 am 
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macvan wrote:
I know professional experienced cutters that have been caught by similar fakes.


greedy is almost always the reason..............

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 Post subject: Re: Fake Rough Diamonds - GCI Report
PostPosted: Mon Aug 18, 2014 12:25 am 
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Fakes from DRC. the only pics I could get of them. offered to me at a bargain. Deal never took place but they did look good.Image


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 Post subject: Re: Fake Rough Diamonds - GCI Report
PostPosted: Mon Aug 18, 2014 12:26 am 
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Image


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 Post subject: Re: Fake Rough Diamonds - GCI Report
PostPosted: Mon Aug 18, 2014 1:07 pm 
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The diamond tester (thermalconductivity meter) is your friend. I know of a case where a novice buyer purchased some Topaz that looked like diamond crystals. It was not fun breaking the bad news to this guy.
Early in my career, a businessman who traveled frequently to Africa showed me what looked like a diamond crystal, but was in fact a piece of polycarbonate plastic shaped to look like a diamond crystal.

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 Post subject: Re: Fake Rough Diamonds - GCI Report
PostPosted: Mon Aug 18, 2014 11:57 pm 
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I am fortunately a qualified evaluator. A loop in most cases is all I need. there are the odd case where I use a scratch pen.


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 Post subject: Re: Fake Rough Diamonds - GCI Report
PostPosted: Tue Aug 19, 2014 1:06 pm 
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Are any of these available for sale at non-diamond prices? I really think they're cool from an artistic standpoint, regardless of the malicious intent behind them.


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 Post subject: Re: Fake Rough Diamonds - GCI Report
PostPosted: Tue Aug 19, 2014 4:19 pm 
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Thank you TreasureGems for sharing the information about fake rough diamonds :D :D :D

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 Post subject: Re: Fake Rough Diamonds - GCI Report
PostPosted: Fri Aug 22, 2014 1:44 am 
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Scarodactyl. When I come across them again I'll try to get some for you. normally the guys selling them are reluctant to part with them as they are attempting to sell them off as the real thing. There are many in Taung South Africa. Haven't been that way in a long time. should make a trip to there in the next few months.


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 Post subject: Re: Fake Rough Diamonds - GCI Report
PostPosted: Fri Aug 22, 2014 11:39 am 
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Thanks, that would be awesome! Yeah, I can see how they would be hard to come by (unless you're paying diamond prices, in which case they'd be all too easy to come by), but it would be a fun thing to add to my collection.


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 Post subject: Re: Fake Rough Diamonds - GCI Report
PostPosted: Sat Aug 23, 2014 4:52 am 
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Actually, with testing in the labratory, we can't confuse these crystal with diamond.Anw, this is useful referential case. Tks a lot for your post :)


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