Moissanite vs. Diamond — what's the difference?

More and more people are consciously choosing moissanite. But what exactly is the difference compared to a diamond? We'll put them side by side.

Price

One of the biggest differences between moissanite and diamond is the price. Diamonds are traditionally very expensive: for a perfectly cut 1-carat diamond, you can quickly pay tens of thousands of euros. For a high-quality moissanite, however, that price is many times lower — allowing you to wear a stunning piece of jewelry even with a smaller budget.

These price differences are due to historically determined structures in the diamond market, not necessarily to the fact that diamonds are inherently "higher quality."

Hardness and durability

On the Mohs scale, which classifies minerals by their hardness, diamond tops the list with a score of 10. Moissanite scores approximately 9.25 to 9.5 – making it one of the hardest alternatives that allows for practical wear without significant concessions.

In practice, this means that moissanite stays beautiful for almost as long as a diamond, and does not quickly dull or visibly deteriorate with daily use.

Brilliance and light refraction

A subtle yet visible difference lies in how both stones refract light and sparkle. Diamond has a high refractive index, but moissanite scores even higher — meaning moissanite often sparkles even more under light.

However, with the naked eye, the difference in brilliance between a well-cut diamond and a good moissanite is often barely noticeable. Those who do recognize the difference primarily see that moissanite reflects light a little more "lively."

Color

Both diamond and moissanite come in various color tones, but the popular colorless varieties are most valued. With diamonds, a colorless stone often means a much higher price. With moissanite, on the other hand, the absence of discoloration – thanks to laboratory growth conditions – is standard. This allows you to get a stone that visually looks "colorless" relatively cheaply without a high price tag.

Ethics

The ethical aspect is playing an increasingly important role for many people. The extraction of natural diamonds has historically been associated with conflicts, poor working conditions, and environmental impact. While there is regulation (such as the Kimberley Process), debate about its effectiveness persists.

Moissanite, on the other hand, is manufactured under controlled conditions, making it an attractive alternative for those who value ethically responsible jewelry.

Frequently Asked Questions

Is it acceptable to choose a moissanite engagement ring instead of a diamond?

Yes – more and more couples are consciously choosing moissanite because of its lower price, beautiful appearance, and ethical advantages. This allows you to save budget for other aspects of, for example, the wedding or honeymoon.

Why is a diamond so much more expensive than a moissanite?

The price difference is not only due to rarity or quality but largely due to market dynamics. Historically, diamond dealers have built a strong position that kept prices high. As a result, the "value" of a diamond is often more connected to its lore and market structure than purely to its physical properties.

How is moissanite made?

Although moissanite occurs naturally, it is extremely rare in size and quality suitable for jewelry. Therefore, commercial moissanite is manufactured in a laboratory process where silicon and carbon are combined under high pressure and temperature and then cut into a gemstone.

This results in high-quality stones, which explains their visual resemblance to diamonds.