Product Information

DiamondNite is the first and only one step dual tester for non-diamond such as cubic zirconia,  artificial moissanite, or genuine diamond. 
With superfast diamond testing this tester is essential for any jewellers, gemstone dealers, collectors or jewellery buyers and dealers.
With the latest advancements in lab created diamonds this tester gives instant notification and removes doubt.
Just touch the probe to the stone - no beep means it is a CZ or other fake,  the first  continuous beep means diamond (green light), or if it is followed by a lower continuous beep, then it's moissanite (red light). 
The initial warm-up time is five seconds, the test itself takes only 1.5 seconds, and recovery time between tests is an astonishing one second!

Moissanite Information

As a gemstone used in jewelery, silicon carbide is called Moissanite for the jewel's discoverer Dr. Henri Moissan.
Moissanite is somewhat similar to diamond in several important respects: it is transparent and hard (9, although a patent states 8.5-9.0,[6] -note on the Mohs scale compared to 10 for diamond), with a refractive index between 2.65 and 2.69 (compared to 2.42 for diamond).
Moissanite is somewhat harder than common cubic zirconia. Unlike diamond, Moissanite is strongly birefringent. This quality is desirable in some optical applications, but not in gemstones. For this reason, Moissanite jewels are cut along the optic axis of the crystal to minimize birefringent effects.
It is lighter (density 3.22 vs. 3.56), and much more resistant to heat. This results in a stone of higher lustre, sharper facets and good resilience.
Loose moissanite stones may be placed directly into ring moulds; unlike diamond, which burns at 800 °C, moissanite remains undamaged by temperatures up to twice the 900 °C melting point of 18k gold.

In 1998, Charles & Colvard introduced jewel-quality synthetic silicon carbide to the market under the name "moissanite".
This gemstone possesses superior fire and brilliance to diamonds. Upon introduction, some jewelers misidentified moissanite as diamond. Moissanite's thermal conductivity is very close to that of diamond, rendering useless the older thermal testers that they relied upon.
Moissanite has a slightly higher index of refraction (brilliance) and much greater dispersion (fire) than diamond, as it shows many more "flashes" of color than a diamond. Unlike cubic zirconia and other diamond simulants, moissanite does not cloud over time, and is extremely durable.

Once its properties are known, moissanite is easy to distinguish from diamond, as it is doubly refractive and has a very slight green, yellow, or gray fluorescence under ultraviolet light. Because the brilliance of the moissanite helps to cancel the perceived color, cuts with higher brilliance tend to have a much "whiter appearance" (i.e., round brilliant, square brilliant, and cushion cut) versus cuts that have a lower refractive index such as the marquise, radiant and especially the pear-shaped cut.
The color is often defined as "near colorless" which on the diamond color scale ranges from G through J.

Charles & Colvard markets moissanite primarily to self-purchasing women. However, moissanite engagement rings, eternity bands and circle pendants have become popular among value-conscious consumers. For example, a 1-carat (200 mg) moissanite gem sells for about $500 (2007 USD), while a diamond of similar size and color typically sells for $4500 or more.