Is it real?

[Baelish]

I am going to check out a few diamonds soon and wanted to know a couple of things first:

Do all GIA diamonds have the cert number engraved on them?

How can I tell a diamond from a CZ with a loupe?

How can I tell a diamond from moissanite(?) with a loupe?

Thanks for your help!

 

[larry]

Only some GIA diamonds have the cert number engraved on them.

CZ: Cubic zirconium. A widely used stimulant, an imitation for a natural diamond. CZ, although easy detectable by its 80% higher weight than a diamond of the same proportions or by thermal conductivity testing, does often fool lay persons.

Moisannite: A rare crystal in nature. Synthetically created moissanite produced by Charles & Colvard is a stimulant ranking a high 9.25 on the Mohs hardness scale (Diamond = 10). Its double refraction is one of the few differences with a Diamond, thermal conductivity is almost equal.

For a lot of details on the subject check out:

http://www.gemlab.net/publication1.htm

Your best bet is always go with a reputable diamond dealer.

 

[smartypants]

 

[smartypants]

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On 6/18/2002 11:40:54 PM

A widely used stimulant...

Colvard is a stimulant ranking a high 9.25...
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your info is good, but - FYI, it's called a SIMULANT - from the verb ~ to simulate ~ meaning to re-produce or re-create - to sTimulate is something entirely different!