Commonly Marketed Jewels


Know what you're buying

Buying a diamond is an exciting process, but it can also be confusing. Scientific and technological advances in the jewelry industry have made it possible for synthetic diamonds to be manufactured and lab-created (made by man). There are even some very good imitations. Just know what you're buying.


MARKET
NAME
TRUE
IDENTITY
CHEMICAL
COMPOSITION
HARDNESS
Mohs Scale
REFRACTIVE
INDEX (RI)

DIAMOND

diamond

C

carbon

10

2.417

MOISSANITE moissanite SiC silicon carbide 9 1/4 2.56-2.69

ASHA DIAMOND®

cubic zirconia

CZ+C+ Optical layer

zirconium oxide

8 1/2

2.2-2.24

BRIOLITE

cubic zirconia

Zr02

zirconium oxide

8 1/2

2.15

CARAT*

cubic zirconia

Zr02

zirconium oxide

8 1/2

2.15

DIAMOND AURA

cubic zirconia

Zr02

zirconium oxide

8 1/2

2.15

DIAMOND NEXUS

cubic zirconia

Zr02

zirconium oxide

8 1/2

2.15

DIAMONIQUE

cubic zirconia

Zr02

zirconium oxide

8 1/2

2.15

FANTASIA

cubic zirconia

Zr02

zirconium oxide

8 1/2

2.15

GEMESIS DIAMONDS

cubic zirconia

Zr02

zirconium oxide

8 1/2

2.15

LANNYTE

cubic zirconia

Zr02

zirconium oxide

8 1/2

2.15

RUSSIAN BRILLIANTS

cubic zirconia

Zr02

zirconium oxide

8 1/2

2.15

SONA DIAMOND

cubic zirconia

Zr02

zirconium oxide

8 1/2

2.15

ZIAMOND

cubic zirconia

Zr02

zirconium oxide

8 1/2

2.15

MIA DIAMOND

cubic zirconia

Zr02

zirconium oxide

8 1/2

2.15



The anatomy of a diamond

A diamond is composed of pure carbon crystallized and is the hardest substance known to man. Only Mother Nature can make a natural diamond. A natural diamond is identified using only the single word, "diamond".

Synthetic diamonds—also known as lab-created diamonds

Synthetic diamonds are NOT imitation diamonds. Synthetic means the product is man-made in a laboratory, using the same chemical substance (pure carbon) found in natural diamonds. A synthetic diamond has the same physical, chemical and optical properties as a natural diamond. It's even cut like a natural diamond. The difference is man, not Mother Nature, creates a synthetic diamond. So it's less expensive than its natural counterpart.

Simulate, diamond simulate or simulated stones are imitations

A simulate or simulated stone is not a diamond, but rather an imitation, man-made product that resembles a diamond. A diamond imitation should never be confused with a synthetic diamond, which possesses essentially the same physical, chemical and optical properties of a natural diamond. An imitation or diamond simulate can be made of glass, plastic or some other compound, such as zirconia ode, better known as CZ or cubic zirconia. Simulated/imitation stones are usually inexpensive to manufacture.

Be aware that sellers of imitation diamonds may use names that fool consumers into believing they're selling natural diamonds and not imitations. Names that include words before or after the word "diamond," such as Royal Diamond and Diamond Extraordinaire, are dead giveaways that should make you question the true identity of the stone. Be sure to ask if the stone you're buying is a natural diamond.

Remember, if a stone is advertised as a diamond simulate or diamond alternative, it's not a natural diamond nor is it a synthetic diamond. It's an imitation. Only a natural diamond can be identified using merely the word "diamond"—no other description is needed.

"The same as" or "just like"

Don't be fooled into believing that one product is necessarily the same as or just like another. Natural diamonds are very different from synthetic diamonds and diamond simulants, such as CZ. While these products offer consumers options, it's crucial to know what it is you're buying. Ask questions and get the facts in writing.

Treatments to natural diamonds

Treatment or enhancements to natural diamonds with the goal of improving the diamond's overall appearance are common. These treatments are acceptable and have their place in the jewelry world, provided the consumer understands if a particular "diamond" was treated, how it was treated and why. Treated diamonds offer a way for consumers to own lovely jewelry at affordable prices. Please do not confuse treated natural diamonds with treated CZs. They're simply not the same.

A new colorless moissanite

Eternity and Forever One Moissanite (chemical composition: silicon carbide) are lab-created, colorless (D-F) jewels. While moissanite closely resembles a natural diamond, it's not a diamond, synthetic diamond or brand of diamond. It's also not marketed as a diamond substitute. Moissanite is a unique jewel. However, many people purchase it as a diamond alternative.

Learn more about moissanite gemstones

If you'd like to learn more about our moissanite gemstones, simply download the Moissanite Ring Guide »

For additional information

If you'd like to learn more about moissanite, natural diamonds and diamond simulates, please contact the Jewelers Vigilance Committee (JVC) at www.jvclegal.org or call 212.997.2002.