What is the Difference Between Moissanite and Cubic Zirconia?

Moissanite and cubic zirconia are both popular alternatives to diamonds. They are both synthetic gemstones that are made in a laboratory. However, there are some key differences between the two stones.


Moissanite is a naturally occurring mineral, but it is very rare. It is made up of silicon carbide and is the second hardest natural substance on Earth, after diamond. Moissanite is known for its brilliance and fire, which is the way it reflects light. It is also colorless, which makes it a good choice for people who are looking for a diamond alternative.

Cubic Zirconia

Cubic zirconia is a man-made gemstone that is made from zirconium dioxide. It is not as hard as moissanite, but it is still very durable. Cubic zirconia is also colorless, but it does not have the same brilliance as moissanite.


Here is a table comparing the two stones:

Feature Moissanite Cubic Zirconia
Hardness 9.25 on the Mohs scale 8.5 on the Mohs scale
Color Colorless Colorless
Brilliance Very high High
Fire Very high Low
Cost More expensive Less expensive

Which is Better?

The best stone for you will depend on your individual needs and preferences. If you are looking for a stone that is as close to a diamond as possible, then moissanite is a good choice. It is more expensive than cubic zirconia, but it is also more durable and has a higher brilliance. If you are on a budget, then cubic zirconia is a good option. It is less expensive than moissanite, but it is still a beautiful stone.

Other Considerations

Here are some other factors to consider when choosing between moissanite and cubic zirconia:

Cut: The cut of a stone can affect its appearance just as much as the material it is made of. A well-cut moissanite or cubic zirconia will sparkle and shine beautifully.

Setting: The setting of a stone can also affect its appearance. A prong setting will hold the stone in place and protect it from damage.

Personal preference: Ultimately, the best way to choose between moissanite diamond and cubic zirconia is to see both stones in person and decide which one you like better.

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