THE NETCARAT EDUCATION SERIES
Understand the distinction between moissanite and laboratory-grown diamond before comparing stones.
Explore the guide
THE ESSENTIAL IDEA
Moissanite is silicon carbide. Laboratory-grown diamond is diamond.
UNDERSTAND THE DETAILS
Moissanite can be used as a diamond simulant, but it is a different gem material. Laboratory-grown diamond has diamond’s carbon crystal structure.
A listing should clearly identify the material. Ask for written confirmation rather than relying on a photograph or the word “sparkle.”
UNDERSTAND THE DETAILS
Moissanite and diamond interact with light differently. Moissanite has stronger dispersion, which can produce more pronounced rainbow flashes.
View the individual stones in more than one lighting environment. Your preference for their appearance is a personal choice.
THE DETAILS, SIDE BY SIDE
| Characteristic | Moissanite | Laboratory-grown diamond |
|---|---|---|
| Composition | Silicon carbide. | Carbon in diamond’s crystal structure. |
| Category | A distinct gemstone; can act as a diamond simulant. | Diamond with a laboratory-grown origin. |
| Appearance | Different optical behavior, including stronger dispersion. | Diamond’s characteristic optical behavior. |
| Identification | Confirm the gem material. | Confirm both diamond identity and laboratory-grown origin. |
A LITTLE MORE CLARITY
Do not rely on a single home test or a visual impression. Ask a qualified gemologist or laboratory to identify the material.
YOUR NEXT STEP
Bring your questions to Netcarat. Explore the details that matter to your next piece.