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Home >>Cubic Zircon Jewelry >> An important word about cubic zirconia
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An important word about cubic zirconia


Cubic zirconia (CZ) is the best diamond simulation made to date, and even some jewelers have mistaken these stones for diamonds. Shortly after its appearance, several well-known Washington, D.C., jewelers found them stuck with CZ instead of the one-carat diamonds they thought they’d purchased. The crooks were very clever. A well dressed couple would arrive at the diamond counter and ask to see various one-carat round, brilliant-cut loose diamonds. Because of their fine appearance and educated manners, the jewelers relaxed their guard. The couple would then leave, not making a purchase decision just then, but promising to return. When the jewelers went to replace their merchandise, something didn’t seem quite right. Upon close examination, the jewelers discovered that the “nice couple” had pocketed the genuine diamonds and substituted CZ.

CZ is almost as brilliant as diamond, has even greater fire (which masks its lesser brilliant), and is also relatively hard, giving it good durability and wearability. CZ is also being produced today in fancy colors-red, green, and yellow-and can provide a nice diamond “alternative” as a means to offset or dress up colored stones in jewelry if diamonds are unaffordable.

But make sure you know what you are buying. For example, if you are shown a lovely amethyst or sapphire ring dressed up with “diamonds” make sure to ask whether the colorless stones are diamonds. And if you are having your own piece of jewelry custom made, you might want to consider using CZ. You can ask your jeweler to order them for you. CZ makes attractive jewelry that can be worn every day without worry.

So how can you tell if you have a CZ? Some of the tests already discussed may help you detect a CZ. The following, however, may eliminate any remaining doubt. If you are familiar with diamond sizes or have a spread gauge, you can estimate the diamond carat weight by its spread. A loose stone can be weighed on a scale, which most jewelers have handy, and you can determine how much it should weigh if it is truly a diamond. If the weight is much greater than the diamond weight should be, based on its spread, then it is not a diamond. A CZ is approximately 75 percent heavier than a diamond of the same spread.

Look at the girdle - If the girdle is frosted, a subdued whiteness resembling slightly wet or oiled frosted glass will indicate CZ. Unfortunately, looking at girdles to differentiate between the appearance of frosted CZ and frosted diamond girdles requires considerable experience.

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