Many people wonder how to identify real moissanite. The gemstone is often visually confused with diamonds, as both sparkle intensely and are frequently cut in the same brilliant cut. At the same time, moissanite is sometimes compared to cubic zirconia, even though they are completely different materials. In this article, we explain how to identify moissanite and what the differences are between it, diamonds, and cubic zirconia.
How to identify real moissanite?
Identifying real moissanite with the naked eye is not always easy. Even experienced jewelers sometimes find it difficult to distinguish from a diamond because both stones look very similar and sparkle intensely. Special testing devices or thorough examination are often used to unequivocally identify moissanite.
Can moissanite be distinguished from diamonds?
Yes. Moissanite often sparkles a bit more intensely and shows more color reflections than a diamond. Additionally, the stone possesses what is known as double refraction, which causes light to disperse differently within the gemstone.
Is moissanite just cubic zirconia or similar?
No. Moissanite is a distinct gemstone made of silicon carbide and differs significantly from cubic zirconia. The stone is harder, more durable, and exhibits a different sparkle. While cubic zirconia is often only used as an inexpensive jewelry stone, moissanite possesses properties that bring it much closer to diamonds.
Does moissanite pass a diamond tester?
Yes, in many cases, moissanite can pass a simple diamond tester. The reason is that moissanite conducts heat almost as well as a diamond, which is what many testing devices measure. Therefore, laboratories use special equipment and more precise tests to definitively distinguish between diamonds and moissanite.

Why moissanite is so difficult to distinguish from diamonds
Identifying real moissanite is often more difficult than many people think. Visually, the gemstone can look very similar to a diamond, especially when it is brilliant-cut and sparkles intensely. Many simple diamond testers with a thin tip and a red-green indicator only measure the thermal conductivity of a gemstone. This is precisely why moissanite often passes a diamond tester. The stone conducts heat almost as well as a diamond, which is why such devices often cannot definitively distinguish between moissanite and diamonds.
To reliably distinguish between moissanite and diamond, special laboratory equipment is usually used to analyze other properties of the gemstone. Some moissanite stones also have a very small engraving on the stone that confirms their origin. However, this is usually only visible with a strong magnifying glass or under a microscope and is therefore hardly discernible in everyday life. This is precisely why moissanite in many pieces of jewelry looks optically very similar to a diamond – for example, in sparkling moissanite rings or classic moissanite earrings, where the intense sparkle of the gemstone is particularly well showcased.
Can you identify moissanite at home?
Identifying moissanite at home is possible but not always straightforward. With the naked eye, the gemstone is difficult to distinguish from a diamond, as both sparkle very intensely and are often cut in the same brilliant cut. A possible clue can be the sparkle: moissanite often produces slightly stronger color reflections in light, while diamonds often appear a bit more neutral. Especially in direct light, the stone can therefore appear very vibrant.
Another clue can be a strong magnifying glass. Some moissanites exhibit what is called double refraction, which can make certain facets in the stone appear slightly doubled. However, this effect is not always easy to recognize, especially with small stones or in pieces of jewelry such as moissanite rings or moissanite earrings. Therefore, special testing devices or an examination by a jeweler are usually used for reliable identification.

How to distinguish moissanite from cubic zirconia
Distinguishing between moissanite and cubic zirconia is usually a bit easier than comparing it to diamonds, but it still requires a trained eye. Cubic zirconia often appears a bit glassier and can look as if the stone has more facets than it actually does. The sparkle often seems more uniform and less vibrant. Moissanite, on the other hand, usually shows clearer facets and creates many small light reflections that can appear particularly lively.
Another difference lies in the hardness of the stones. Moissanite is one of the harder gemstones and is significantly more resistant than cubic zirconia. Theoretically, one could try to scratch the stone lightly: if the stone is damaged in the process, it is very likely cubic zirconia. If the surface remains undamaged, it could be moissanite. However, such tests should only be performed with caution, as jewelry can be damaged.
Difference between Moissanite, Cubic Zirconia, and Diamond
Moissanite, cubic zirconia, and diamonds often look similar at first glance, but they differ significantly in their properties. The following table shows the most important differences between the three gemstones.
| Property | Moissanite | Diamond | Cubic Zirconia |
|---|---|---|---|
| Material | Silicon Carbide | Pure Carbon | Zirconium Dioxide |
| Hardness (Mohs Scale) | approx. 9.25 | 10 | approx. 8–8.5 |
| Refractive Index | Very high | High | Medium |
| Sparkle (Dispersion) | Very strong, many color reflections | Strong, but somewhat more neutral | More uniform, often glassier |
| Refraction type | Double refraction | Single refraction | Single refraction |
| Scratch resistance | Very high | Extremely high | Significantly lower |
| Diamond tester | Often passes | Passes | Usually does not pass |
| Durability in everyday life | Very durable | Extremely durable | Can become dull over time |
| Use in jewelry | High-quality jewelry | High-quality jewelry | Often fashion jewelry |
Moissanite is in many ways between diamond and cubic zirconia. The gemstone is significantly harder and more durable than cubic zirconia and exhibits a very intense sparkle. In our Moissanite Hardness Test, we even show how resistant the stone truly is and why its high hardness can be a great advantage in everyday life. At the same time, moissanite can appear optically very similar to a diamond, which is why the two gemstones are often confused in everyday life.

Which gemstone is the best choice?
All three stones have their own properties and can look very beautiful in jewelry. Diamonds have stood for rarity and luxury for centuries, while cubic zirconia is often used as an inexpensive jewelry stone in fashion jewelry. Moissanite has also become increasingly established in recent years because the gemstone combines many properties that are particularly valued in everyday life. It possesses an intense sparkle, high hardness, and very good resistance to scratches and wear.
Many people therefore deliberately choose moissanite because the stone remains permanently brilliant and is also significantly more affordable than a diamond. While cubic zirconia often loses its luster over time, moissanite retains its brilliance for many years. This makes the gemstone particularly suitable for jewelry that is worn regularly, such as moissanite rings or moissanite earrings, where the sparkle should be maintained permanently in everyday life.
With us, this idea is taken even further. Our Moissanite jewelry is deliberately made from 925 sterling silver and finished with an 18k white gold plating. This combination ensures that the jewelry is durable, skin-friendly, and at the same time affordable. Sterling silver is robust enough for everyday wear, and the white gold plating also provides a bright, high-quality surface that perfectly matches the sparkle of moissanite. This creates jewelry that can be worn permanently without quickly losing its radiance – and at a price that won't break the bank.
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