Diamonds: Fake or Real?
Posted 27 January 2005 - 09:31 AM
Posted 29 January 2005 - 09:49 AM
Take a blank piece of paper and make a dot on it with a pen.
Posted 29 January 2005 - 10:04 AM
In a CZ you will see a circular reflection of that dot clearly through the pavilion. The stone on the left is the CZ. The stone on the right is a real diaimond.
A diamond will break up that reflection to the point where it is almost imperceptible. In a CZ it will be very easy to see.
There are other ways of making the distinctions between fakes and real but this is an easy simple test that any laymen can perform.
Posted 29 January 2005 - 03:11 PM
Curious if there is a similarly easy test that can be applied to a mounted stone?
I usually recommend the pocket conductivity tester that most jewelers seem to have. It's fairly accurate, and costs nothing.
Posted 29 January 2005 - 04:02 PM
Getting back the fluorescence issue just because, I once went into a jewelery store where the designer puroosely sought out diamonds with varying amounts of fluorescence and created the most beautiful pieces using the fluorescene as the design. The colorations were incredibly subtle but strong enough to notice. I couldn't stop looking at them. What an eye this guy had.
-Ice T, The Ice Opinion
Posted 01 February 2005 - 06:14 AM
1) scratching/scuffing. As we all know diamonds are really quite hard! CZ really isnt..... if you're looking at a ring and can get a loupe or magnifiying glass, have a good look at the facets of the stone (tilt it so that the reflection is compeltely on the surface). CZs of any age will almost definietly show light scratching and scuffing - diamonds are very unlikely to.
2) 'sharp edges' - its possible to cut a diamond much more 'finely' than a CZ - so the edges between the facets will always be very sharp on a diamond. Obviously experience is rather helpful here cos otherwise you dont know what you should be comparing to, but if you have a chnce to look at both together you can clearly see differences
the other tests tend to require toys - like heat and electrical conductivity......
Oh, and another great test for an unmounted CZ/diamond is weight. same size CZ will be nearly twice the weight of a diamond. having the expected weight of say .25, .5, .75 and 1 ct in your head makes that a nice easy thing to work out!
Posted 01 February 2005 - 10:56 AM
This first graphic is in reference to the scuffs/scratches. CZ's do scratch pretty easily. This is a stone that's been around a bit. In this graphic you can easily make out scuffs/abrasions at the facet junctions as well as scratches on the table.
Posted 01 February 2005 - 11:00 AM
CZ's are generally cut pretty sloppy when it comes to symmetry characteristics. Here is a cz alongside an AGS ideal cut to demonstrate the differences nightmare was bringing out.
Barry... that is a very good article. Thanks for posting it. Are we allowed to reference and link educational material in these posts? It was my understanding that there are no exceptions.
Posted 02 February 2005 - 02:39 AM
Posted 11 January 2006 - 07:43 PM
Hi, I am curious about the Asha diamonds. Can you tell me the difference between a Asha CZ and a typical CZ and a real diamond? Thanks
My pleasure nightmare.
Posted 01 July 2006 - 10:52 AM
Never look at a loose diamond on a white jewelers'
tray. Always look at it on a piece of newspaper or
printed material. If the diamond is real, you won't be
able to read the newsprint through the facets; if the
diamond is fake, it's just like looking through, well,
Posted 24 October 2006 - 09:08 AM
Posted 26 October 2006 - 05:00 AM
GG(GIA) ICGA(AGS) NAJA
There's never a crowd when you go that extra mile.
Professional Appraisals in Denver
Posted 23 January 2007 - 02:49 PM
Posted 09 February 2007 - 01:42 AM
Put the rock in front of your mouth and fog it like you would try to fog a mirror. If it stays fogged for 2-4 seconds, itâ€™s a fake. A real diamond disperses the heat instantaneously so by the time you look at it, it has already cleared up.
Posted 01 March 2007 - 08:18 PM
My pleasure nightmare.
Hi Rhino, I have a question. What if the rock is actually mounted then is there another typr of test which could be done at home?