So what is the difference between diamond and cubic zirconia? Why is cubic zirconia (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.
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Weight. CZs are heavyweights in comparison to diamonds; a CZ will weigh approximately 1.75 times more than a diamond of equivalent size. So basically, a piece of CZ the same size as a one-carat diamond weighs about 1.75 carats.
Color. Though a CZ sparkle is colorful, the stone is always white. This is rare in diamonds. Colorless diamonds are extremely rare and more expensive. Diamonds will almost always have a yellow tint to them. Even nearly colorless diamonds--more expensive diamonds that are a little less rare--still have yellow in them. The more yellow, the lower the cost.
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Others. Like size, cz jewelry has a large rank of size and is usually bigger than diamonds; and shape and cutting, cubic zirconia could be design in different shape which is so attractived.
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