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Fake Rough Diamonds - GCI Report
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Author:  TreasureGems [ Wed Jun 26, 2013 7:09 pm ]
Post subject:  Fake Rough Diamonds - GCI Report

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

Author:  Stephen Challener [ Wed Jun 26, 2013 7:53 pm ]
Post subject:  Re: Fake Rough Diamonds - GCI Report

Wow. I gotta say, those are really impressive work--I'd love to have one.

Author:  roshanravan [ Thu Jun 27, 2013 1:44 pm ]
Post subject:  Re: Fake Rough Diamonds - GCI Report

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

Author:  ROM [ Thu Jun 27, 2013 2:36 pm ]
Post subject:  Re: Fake Rough Diamonds - GCI Report

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.

Author:  macvan [ Fri Aug 01, 2014 12:38 pm ]
Post subject:  Re: Fake Rough Diamonds - GCI Report

I know professional experienced cutters that have been caught by similar fakes.

Author:  Alberto [ Sat Aug 02, 2014 4:27 am ]
Post subject:  Re: Fake Rough Diamonds - GCI Report

macvan wrote:
I know professional experienced cutters that have been caught by similar fakes.


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

ciao
alberto

Author:  macvan [ Mon Aug 18, 2014 12:25 am ]
Post subject:  Re: Fake Rough Diamonds - GCI Report

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

Author:  macvan [ Mon Aug 18, 2014 12:26 am ]
Post subject:  Re: Fake Rough Diamonds - GCI Report

Image

Author:  thomas.adamas [ Mon Aug 18, 2014 1:07 pm ]
Post subject:  Re: Fake Rough Diamonds - GCI Report

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.

Author:  macvan [ Mon Aug 18, 2014 11:57 pm ]
Post subject:  Re: Fake Rough Diamonds - GCI Report

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.

Author:  Stephen Challener [ Tue Aug 19, 2014 1:06 pm ]
Post subject:  Re: Fake Rough Diamonds - GCI Report

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.

Author:  Osman khattak [ Tue Aug 19, 2014 4:19 pm ]
Post subject:  Re: Fake Rough Diamonds - GCI Report

Thank you TreasureGems for sharing the information about fake rough diamonds :D :D :D

Author:  macvan [ Fri Aug 22, 2014 1:44 am ]
Post subject:  Re: Fake Rough Diamonds - GCI Report

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.

Author:  Stephen Challener [ Fri Aug 22, 2014 11:39 am ]
Post subject:  Re: Fake Rough Diamonds - GCI Report

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.

Author:  Icebluediamond [ Sat Aug 23, 2014 4:52 am ]
Post subject:  Re: Fake Rough Diamonds - GCI Report

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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