Most people, even trained gemologists, cannot tell the difference between diamond and CZ, 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.
CZs were 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. CZs have a refractive index, dispersion and hardness so close to a diamond it's uncanny.
So what are some key features that can guide you in telling the difference between diamond and CZ? Do keep in mind, though, in order to accurately distinguish the two gems, gemological equipment such as microscope, or loupe, must be used for testing and verification.
To start, let's take a look at the hardness factor: Did you know CZ ranges between 8.5 to 9.0 on the Mohs' hardness scale whereas diamond, one of the hardest materials known to man, is rated 10, lying at the top of the hardness scale?
Furthermore, glass (or sand) is rated approximately 5 to 6 on the hardness scale, therefore, dust and dirt will not scratch CZ. Indeed, CZ can scratch glass just like regular diamonds, making it more resistant to chipping.
One great difference between diamond and CZ is 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. Well...isn't that interesting?
Contemporary production of CZ is virtually flawless, whereas diamond usually contains impurities and inclusions, or have some sort of defect, be it a feather, included crystal, or perhaps a remnant of an original crystal face (e.g. trigons).
In regards to color-more precisely, the lack of color-only the rarest of diamonds are truly colorless, as most have a tinge of yellow or brown to some extent. By comparison, CZ in most cases can be made entirely colorless, equivalent to a perfect "D" on diamond's color grading scale.
Also, under close inspection with a loupe, the facet shapes of some CZs appear different from diamonds. Both gems disperse light a little differently. Dispersion is just a scientific term for the breaking up of light into its spectral colors. With a dispersive power greater than diamond (0.060 vs. 0.044), the more prismatic fire of CZ can be seen by even an untrained eye.
Dispersion occurs based on the gem's refractive index. In this case, refractive index simply indicates how much a beam of light will bend, based on the direction in which it is traveling when it passes between two materials of different optical densities (such as between diamond and air; or between CZ and air). Being that CZ has a refractive index of 2.176, compared to a diamond's 2.417, diamonds are therefore said to be brighter than CZ.
Another difference between the two gems is that CZs are thermal insulators-meaning, they reduce the rate of heat transfer-whilst diamonds are among the most efficient thermal conductors-meaning, they allow heat to easily pass through them. Without testing the gems' heat conductivity, it can be difficult to tell them apart.
Remember, it is a 50/50 guess to identify a gem by visual inspection; it is not a scientific method of authentication. That is why even certified and degreed gemologists use gemological equipment for testing and verification.
You will also be glad to know that CZs are not only durable and inexpensive, but just like diamonds, they come in any color of the rainbow, making them even more desirable.
There have been many instances to see if jewelers can tell the difference between diamond and cubic zirconia, just by examining the gems with the naked eye. Over and over again, it was inconclusive; jewelers could not tell the difference just by looking at the gems. So you can now understand why the difference between diamond and cubic zirconia rests in the price, and in the mind...
There are few things that can accent outfits like jewelry can. Diamonds in particular are highly prized for their ability to accent virtually every look, bringing a touch of class and style to even the humblest wardrobe choices. However, due to their cost, it is usually wise to only wear diamonds out for formal occasions, as the price of replacing a lost diamond earring or ring can be extremely high.
There is an alternative, Cubic Zirconium/Zirconia(CZ), but they have something of a spotty reputation. Much of the poor reputation CZs have, has little to do with CZs and more to do with the choices CZ buyers make. With a little forethought and planning, the cost advantage of CZs can be leveraged to achieve the benefits of real diamonds. There are three main considerations(beyond the four Cs), size, metal pairing, and quantity. Paying attention to these three things can lead to near diamond quality results with regards to CZs impact on the wardrobe and your overall look.
We'll start with Size. Size is quite possibly the most important thing to consider when purchasing CZs. All too often, CZ buyers will purchase their 'dream size' earrings, rings, pendants, etc. That is, they purchase the size they wish they could have in real diamonds. The problem with this is, it usually isn't believable. If you're a multi-millionare, then people aren't going to think twice about you wearing 2 carat flawless diamond earrings on any given day. If you're one of us regular people, the size will cause people to wonder if and/or conclude the earrings are fakes. Obviously that's not what you want people thinking about when they look at you.
One of the best ways to avoid this, is to purchase CZs in a size range that doesn't require a huge stretch of imagination for people to believe you could afford if they were real. This will depend on the intended use of the CZs. For example, you can get away with larger CZs for formal events, because it is common for people to have expensive jewelry they don't wear daily that they do wear for formal events. Even then, you still need to stay within the bounds of realism. If you make 30k a year and show up somewhere wearing earrings that would cost 10k if they were real, people will wonder about them and you don't want that. You only want them thinking how great you look.
Metal pairing, or, the type of metal the CZ is set in can also make or break a look. Consider this: You pick a nice believable 1/4 carat set of earrings, but you get some gold plated/filled alloy that turns green the third or fourth time you wear them. Worse, it turns green in a public place and you don't notice it at first. Purchasing CZs in a precious metal setting not only eliminates this concern, but can also greatly enhance the look and elegance of the CZ itself. Your options here range from sterling silver to platinum and everything in between. A good budget choice is gold, platinum, or rhodium plated sterling silver, though a nice gold or platinum setting is outstanding if it is within your budget. Sterling silver should be plated to avoid problems with tarnishing, although tarnish is a lot easier to deal with than turning green. You don't want people thinking about jewelry that is tarnishing or turning green when they look at you. You only want them thinking you look great.
Quantity is about the number of individual CZs a piece uses. Generally speaking, the greater number of stones in a piece of jewelry, the more attention it will attract to itself. The more attention it attracts to itself, the more attention it is taking away from your overall look. Once again, you want them focused on how great you look, not wondering about a piece of jewelry.
These three things all come from the philosophy that your jewelry, like your clothes, should be chosen to compliment and accent your natural beauty. They should accent how great you look. To gain the full advantage of the elegance and class that diamonds can bring using CZs, you must choose pieces that aren't likely to become the center of attention. Rather, you want pieces that will attract attention to you. It's not about having jewelry that looks good, it's about having jewelry that makes you look good.
Both Penny Best & Melanie Spark are contributors for EditorialToday. The above articles have been edited for relevancy and timeliness. All write-ups, reviews, tips and guides published by EditorialToday.com and its partners or affiliates are for informational purposes only. They should not be used for any legal or any other type of advice. We do not endorse any author, contributor, writer or article posted by our team.
Penny Best has sinced written about articles on various topics from Cubic Zirconia. Penny Best Jewelry provides you with fine cubic zirconia jewelry and timeless designs, at an affordable price. The online store at http://www.pennybest.com offers you top quality cz jewelry including beautiful rings, earrings, stunning necklaces, dazzling. Penny Best's top article generates over 9900 views. to your Favourites.
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