Lab-Grown Moissanite vs Natural Diamonds

Lab-Grown Moissanite vs Natural Diamonds

Natural diamonds and lab-grown moissanite are two of the most popular gemstones. They have similar qualities that make them the ideal stones, but there are several factors that set them apart. This article compares these two gemstones and describes the most important properties.

What are natural diamonds and lab-grown moissanite?
Natural diamonds are mined from deep within the earth's core, and consist of 100% carbon.
Moissanite, on the other hand, is a natural mineral first discovered by Henry Moissan in 1893. Natural moissanite is incredibly rare, so lab-grown moissanite is used in jewellery instead. Moissanite consist of 50% quartz and 50% silicate. 


1. Conflict-free, Ethical and Sustainable

Created in a lab, it produces a much lower environmental impact compared to natural mined diamonds.

2. Cut and shapes

Lab-grown gemstones allow for more versatility in terms of cut and shape compared to natural diamonds, which are limited by their actual shape. As such, lab-grown Moissanite is sure to give you great flexibility in terms of cut and shape to suit your gemstone preferences.

3. Colour and Clarity

Lab-grown moissanite follows the same colour grading scheme as natural diamonds. Generally, grades "D", "E", and "F" that are closer to white diamonds are traded at higher prices. Going down alphabetically towards a 'G' or a 'J', the diamond has a slight yellow tint to it. Since lab-grown moissanite are created in a lab environment, we can control the colour of the gems. This explains why lab-grown moissanite are becoming more popular than natural diamonds.

4. Hardness and durability

The hardness index of natural diamonds is 10/10 on the Mohs scale of hardness. Moissanite, on the other hand, is the second hardest gem after diamond, with a hardness index of 9.25/10. That being said, lab-grown moissanite are incredibly durable and can stand the test of time. It is unlikely that it will crack or scratch.

5. Sparkle and Shine

Lab-grown moissanite has a refractive index of 2.65, giving it a rainbow-like glow when viewed under light. This allows it to shine and sparkle even more brilliantly than natural diamonds. The sparkles of lab-grown moissanite remain intense over the years with no trace of tarnishing. Just like natural diamonds, they do not lose their sparkle over time.


While traditional methods of extracting natural diamonds take years to mine deep within the earth's core, the process of producing lab-grown moissanite under lab conditions reduces the carbon footprint and require shorter duration.
By utilizing an advanced electrolytic process, moissanite is formed from carbon and carbon silicate components. Upon polishing, the gemstone is cut to achieve its desire shape and cuts.


Moissanite costs a fraction and significantly lower price, estimated to be about 10% of the natural diamond price. 

The technology to create moissanite has been around a longer time, therefore accounting for its ability to be available at a low cost price.

With moissanite, one can obtain a larger carat size stone at a significantly lower price as compared to natural diamond. 


1. Is Moissanite a real Diamond?

No. Natural moissanite is a rare mineral with physical properties different from diamond. Diamond is composed of 100% carbon, while moissanite is composed of 50% carbon and 50% silicate. Moissanite is a different type of stone from diamond but shares similar qualities in terms of hardness and clarity.

2. Can you tell the difference between lab-grown moissanite and natural diamonds?

Lab-grown moissanite has the same appearance as natural diamond and is difficult for the layperson to distinguish. Although they have different physical properties (refraction, sparkle and hardness), detecting these differences often requires suitable equipment.

3. How do you tell the difference between lab-grown moissanite and natural diamonds?

Their physical appearance is so similar that it is often difficult to distinguish between the two with naked eyes. Under close observation, one might see that Moissanite exhibits a sparkle that is even more shiny than natural diamond. Moissanite has a refractive index of 2.65, giving it a rainbow-like glow when viewed under light.

4. Is Moissanite prone to scratches? 

Moissanite is extremely durable, ranking as the second hardest gemstone after natural diamond. Therefore, it is unlikely for Moissanite to scratch. Moissanite remains shiny throughout the years without traces of dulling. 

5. Are Lab-grown Moissanite certified? 

Yes, lab-grown Moissanite can be certified to guarantee the authenticity of the gemstones, as well as to provide you with the information regarding its Carat weight, Colour, Clarity and Cut. Celesta Moissanite is certified by GRA. All our jewellery pieces are accompanied by an GRA Authenticity Certificate to verify the authenticity of the jewellery. 


1. You want to maximize financial savings

2. As lab-grown Moissanite are priced more affordably than natural diamonds, one will be able to acquire a larger carat size at a lower price as compared to the natural diamond. This translates to the ability to opt for more elaborate designs composed of more gemstone details when one chooses our lab-grown Moissanite.

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