Price as a Sign of Authenticity. Rhinestones are much cheaper than real diamonds of similar size, color, and clarity. Although the low price may indicate that you are not dealing with a genuine diamond, some sellers may try to sell you a rhinestone pretty expensively. Use price as a clue only in conjunction with other tests.
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Diamonds appearance vs. cubic zirconia: If the gemstones reflect more orange colors than white reflections, it’s probably a cubic zirconia tennis bracelet. Diamonds appearance vs. moissanite: Moissanite is also highly reflective, but typically shows a wider range of bright colors than diamonds. In a naked-eye inspection of diamonds, look for

Cubic Zirconia. One of the most common diamond simulants is cubic zirconia (CZ), which is a synthetic material made of zirconium dioxide. CZ was first mass-produced in the 1970s as a less expensive alternative to diamonds. CZ has a hardness of 8 on the Mohs scale, which is less than the hardness rating of a diamond which is 10.
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A white topaz is much softer than a diamond. The average white topaz scores an 8 on the Mohs scale. While 8 is a respectable rating, it’s still far short of a diamond. Cubic zirconia fares slightly better with an average of around 8.5. The white topaz vs cubic zirconia ranking for durability comes out in favor of cubic zirconia.
Price. Lab grown diamonds have the same properties as mined diamonds, making them much more expensive than cubic zirconia but slightly cheaper than naturally occurring diamonds. This makes cubic zirconia a great option for those on a really tight budget. Cubic zirconia costs a fraction of the price of a lab diamond made with a similar colour
While both real and simulated diamonds have the composition of carbon as the main chemical element, cubic zirconia is made of zirconia dioxide. The same carbon element in real and simulated diamonds is attributed to their hardness. Zirconia dioxide places cubic zirconia at 7.5 in the Mohs hardness scale.
Although it isn’t scientifically a diamond, moissanite looks almost identical to the naked eye. Only a trained professional can tell the difference between it and a diamond. Since it’s so easy to create in a lab, moissanite stones cost a fraction of the price of a nature-made diamond. They’re also softer and may require maintenance
The biggest difference is that cubic zirconia is synthetically created while diamonds naturally occur. Thus the supply of CZ is unlimited, where diamonds are a finite natural resource. Cubic zirconia being manufactured does give the stone some advantages. There aren't any of the imperfections usually found in diamonds.

A cubic zirconia will hold up for a while, as long as it's well cared for. But diamonds will hold up longer and with less care than cubic zirconia. Read also: Cubic Zirconia vs Lab Created Diamonds. Natural, lab created diamonds, and cubic zirconia are all considered brittle, meaning they can crack if hit hard enough.

First we’ll note well that diamonds are harder than cubic zirconias, boasting a perfect 10 on the Mohs scale while cubic zirconias come in at 8.0 to 8.5. Note also that CZ stones are more easily scratched and damaged, and that they gets cloudy and need more frequent cleaning in order to maintain their brilliance.
The first difference one can see is that glass is non-crystalline and diamond is crystalline. While the atomic structure of glass is disordered, the atomic structure of diamond is in order and so it is crystalline. Diamond is known to cut glass. On the other hand, glass will not cut diamond. Another difference that can be seen between glass and
What is the difference between cubic zirconia and diamond? CZ is a synthetic gemstone, while diamond is a natural gemstone, although they can now be made in the lab. In natural light, cubic zirconia will give off rainbow colors, while diamond will give off strong white sparkle. Cubic zirconia is less durable than diamond and costs far less.

CZ has a density of 5.65 – 5.95, while diamond has a density of 3.52 ±0.01, meaning cubic zirconia is a denser gemstone, making it heavier than diamond. In other words, a CZ and a diamond of the same carat weight will not be of the same size. The cubic zirconia will be slightly smaller than the diamond.

Easy Home Tests Download Article 1 Identify cubic zirconia by a lower price. Since cubic zirconia is made in a lab, it is much cheaper to cut and produce. A 1-carat cubic zirconia piece can go for around $10, while the same carat diamond could sell for $10,000. .