CZ
Cubic Zirconia is found in nature, though it is extremely rare. The cubic zirconia you see in jewelry today is sythesized in the lab. It looks remarkably like a diamond and hence is often used in place of the diamond in costume jewelry.
Here is a comparison between diamonds and cubic zirconia.
| Diamonds | Cubic Zirconia | Meaning |
| Dispersive power 0.044 | Dispersive power 0.060 | Cubic Zirconia has a greater prismatic fire than diamonds. CZ is more brilliant than diamonds. |
| Moh's hardness scale 10 | Moh's hardness scale 8.5-9.0 | Diamonds may be the hardest stones around but Cubic Zirconia isn't that bad. At 8.5-9.0, CZ is harder than most gemstones but not as hard as diamonds. |
| Lighter than CZ | 1.7 times heavier than a diamond of the same size | CZ's heavier than a diamond, so it would feel more substantial. This is one of the ways you can tell whether a diamond is real or not. |
| Most have flawless | Are virtually flawless | |
| The most efficient thermal conductor | Thermal insulator | Special instruments use this difference to tell whether a gemstone is a diamonds or cubic zirconia. |
The visual similarity between diamonds and cubic zirconia makes cubic zirconia engagement rings popular among the practical men. The saddest thing is to have to return the diamond ring back to the jeweller because she turned down your proposal. Worse still, she might keep the diamond anyway even though she does not want to marry you. If you're not sure how she'd respond, a diamond quality cubic zirconia set in a pretty ring would make a great engagement ring for the actual proposal. White gold rings with cubic zirconias are great substitutes for platinum diamond rings for the time being. If she accepts, you can then buy the actual diamond engagement ring.
Another great thing about cubic zirconia jewelry is that they are far more affordable than rubies, sapphires, diamonds and other precious gemstones one might drool over. Cubic zirconia comes in many colors. They can be used to simulate rubies, sapphires, emeralds, amethyst and virtually any gemstone. That makes them popular in celebrity style jewelry.
Mirror mirror on the wall. What's the cheapest of them all? CZ?
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