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how to tell if diamonds are real

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#1 gnarly



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Posted 06 September 2006 - 05:24 AM

Is it true that to tell if a diamond is real scratch it against glass and see if it cuts it?

#2 Feydakin


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Posted 06 September 2006 - 05:28 AM

Glass only has a hardness of 5.5.. A great many things will still scratch glass that are not diamonds.. Other glass can scratch glass..

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#3 thegemmarket



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Posted 08 September 2006 - 11:37 PM

One of the easiest do it yourself tests to help determine if the diamond you have is real or a CZ is the dot test. Since diamonds reflect light back out through the table (top surface) and CZs are transparent, you can perform a visual test.

Step One: The first thing you need to do is draw a small dot on a clean piece of paper.

Step Two: Next place the diamond face down on the dot.

Step Three: Now looking through the bottom of the diamond you should not be able to see the dot. The image should be a distorted mess. If your stone is a CZ the dot will become a circle that is clearly visible

[url=""]Images on the web shows how to do this Test [/url]