When the US patent on moissanite expired in 2015, the moissanite world grew exponentially because Charles and Colvard, who held the original patent, were no longer the only ones who could produce this stunning diamond simulant. With more moissanite gemstones out there among synthetic lab-grown and natural diamonds, it has become more important than ever to be able to identify true moissanite gemstones. This influx of moissanite is the reason it’s become necessary to have a moissanite tester to ensure you’re getting the real thing.
Basics of Moissanite
Moissanite is a popular diamond alternative, especially in engagement rings. Henri Moissan discovered the gemstone in an Arizona meteor crater in 1893. However, it’s so rare in nature that there isn't enough natural moissanite to produce jewelry. Scientists studied this rare gemstone and developed a way to grow it in the lab by applying heat and pressure to silicon carbide.
Moissanite is very similar to a diamond in several ways, which is why it’s important to know how to test moissanite, so you know if you have a lab-grown diamond or a premium simulated diamond.
NEO Moissanite: What is it?
NEO moissanite is one of the brands offering this unique gemstone available on the market. Although Charles and Colvard had the original patent for producing this stone, once the patent expired, other companies quickly began producing moissanite.
NEO moissanite is essentially the same as moissanite from other brands not named Charles and Colvard Forever One. For example, it’s made from silicon carbide. However, the cut can affect how it appears. For example, available in round diamond cut, the NEO moissanite has less light dispersion, which makes it appear more like a natural diamond in terms of refraction.
Moissanite Testers
So, do you need a moissanite tester? Sometimes called a moissanite diamond tester or diamond moissanite tester, this device is handheld and allows you to test your gemstone to determine whether it’s true moissanite or not.
Similarly, to identify a diamond as well, you need a diamond and moissanite tester. This is a multi-tester that allows you to identify whether a gemstone is a moissanite stone or a diamond without having to use two separate devices for testing each.
How Do Moissanite Testers Work?
Diamond and moissanite testers distinguish between these two gemstones by measuring how they conduct electricity. While diamonds are poor electrical conductors, moissanite allows a measurable electrical current to pass through. This difference is what enables testers to accurately identify each stone, even though they can appear nearly identical to the naked eye.
Because both diamonds and moissanite share similar hardness and brilliance, visual inspection alone is often not enough to tell them apart. Specialized testers provide a quick and reliable way to verify the stone, making them a common tool used by jewelers and professionals when confirming gemstone authenticity.
Does Moissanite Pass a Diamond Tester?
Moissanite can pass a basic diamond tester, especially older models that only measure thermal conductivity. Since both diamond and moissanite conduct heat in a similar way, these testers may incorrectly identify moissanite as a diamond. However, more advanced testers use both thermal and electrical conductivity to distinguish between the two. Because moissanite conducts electricity and diamond does not, modern dual testers are able to accurately tell them apart, making them a more reliable option for gemstone identification.
Moissanite Testers and UV (Ultraviolet light)
Unlike with a diamond tester, ultraviolet light affects the way a moissanite tester works. UV light affects the gemstone's electrical conductivity and thus is helpful when a moissanite tester is having trouble identifying the gemstone. Shining a UV light on the moissanite during testing helps the gemstone to be identified correctly.
Type II Diamonds
As mentioned before, Type II diamonds are those rare diamonds (only 1% to 2% of all natural diamonds) that have the highest thermal conductivity of all diamonds, making them able to conduct electricity when measured by a tester and thus able to be identified as moissanite. This is because they were formed under high pressure for longer periods than average. They have almost no chemical impurities.
Do You Need a Moissanite Tester?
The average gemstone and jewelry buyer most likely doesn't need to have their own moissanite or diamond tester. If you purchase from a reputable source, then you can be sure of what you're buying.
However, if you do decide to purchase a tester, it’s helpful to read diamond moissanite tester reviews, which you can easily find online. The reviews will help you determine which type of tester is best for you and whether you need a simple tester or a multi-tester. Some of the multi-tester models can provide three possible outcomes: diamond, moissanite or metal. If you don't already own a tester, then you're best off buying a multi-tester from the start.
Choose Premium Moissanite for Your Jewelry Needs
Moissanite is a spectacular choice for your engagement ring, stunning earrings, or any of your gemstone jewelry needs. It’s a more value-conscious, ethical and sustainable choice than a diamond. Shop Gema&Co’s lineup of stunning moissanite jewelry to find your forever fit. Contact us to learn more.
