Moissanite vs Diamond: Which Should You Buy?

Both moissanite and diamonds are stunning choices for fine jewelry. Understanding their differences helps you make the best decision for your style and budget.

Origin

Diamonds are natural gemstones formed deep in the earth over billions of years. Moissanite is a lab-created silicon carbide that mimics the look of a diamond at a fraction of the cost.

Brilliance & Fire

Moissanite has a higher refractive index than diamond (2.65–2.69 vs. 2.42), giving it more rainbow "fire." Some prefer this extra sparkle; others prefer the more subdued brilliance of a diamond.

Hardness

Diamonds score 10 on the Mohs hardness scale — the hardest natural substance. Moissanite is 9.25, making it highly durable for everyday wear.

Price

A 1-carat lab-grown moissanite can cost 80–90% less than a comparable diamond, making it ideal for those who want a large stone at an accessible price point.