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How To Distinguish Diamond From Cubic Zircon

by hujie123123 on Sep 1, 2010

Diamond and cubic zircon are exactly same from the appearance. That is the reason why cubic zircon (CZ) quickly becoming more popular as a desirable substitute for diamond. Gemologists can agree that CZ comes closer than any other gem material to matching the characteristics of a diamond. How to distinguish them?

Most people, even trained gemologists, cannot tell the difference between diamond and CZ of wholesale jewelry, with the naked eye. Moreover, to the untrained eye, CZ looks identical to a good quality diamond. However, under closer inspection, CZ appears to have slightly less brilliance (or sparkle) than a diamond, and more fire, or flashes of color.

CZ was originally developed by the Russians, for their space program. They were developed as an alternative to diamonds that were used in the optics of their lasers. CZ has a refractive index, dispersion and hardness so close to a diamond it's uncanny.

So what are some key...Read More >>