Updated as of June 2026
Moissanite vs Lab-Grown Diamond
| Moissanite | Lab-Grown Diamond | |
|---|---|---|
| Price / carat | $200 to $800 | $400 to $3,000 |
| Hardness (Mohs) | 9.25 | 10 |
| Color | Colorless, Near-colorless | Colorless, Fancy colors |
| Treatment | Lab-grown (not a treatment, fully synthetic) | HPHT or CVD growth |
The bottom line
Moissanite and Lab-Grown Diamond both make beautiful jewelry. Choose by the look you want first, then weigh hardness against how hard you will wear the piece, and let price settle close calls. Read the full guides for Moissanite and Lab-Grown Diamond.
Frequently asked questions
Is Moissanite or Lab-Grown Diamond more durable?
Lab-Grown Diamond is harder (Mohs 10 vs 9.25), so it resists scratches better.
Which is cheaper, Moissanite or Lab-Grown Diamond?
Moissanite runs about $200 to $800 per carat and Lab-Grown Diamond about $400 to $3,000 per carat, so Moissanite is usually the more affordable choice.
Which should I choose?
Pick Moissanite if you want colorless tones and Lab-Grown Diamond if you prefer colorless. Match the stone hardness to how you will wear it and let budget break the tie.