Moissanite vs Lab-Grown Diamond: Which Should You Choose?

Moissanite and lab-grown diamond are two different materials that look similar but aren't the same. A lab-grown diamond is real diamond — crystallized carbon, Mohs hardness 10, graded on the 4Cs and certified by IGI or GIA. Moissanite is silicon carbide, a separate gemstone with a Mohs hardness of about 9.25. Both are durable enough for daily wear, but only one is technically a diamond.

Appearance: Moissanite has more fire — it disperses light into rainbow flashes more intensely than diamond. Some people love that extra sparkle; others find it reads slightly less like a classic diamond, especially in larger sizes. Lab-grown diamond has the exact look of a mined diamond because it is one.

Price: Moissanite is the lower-cost option of the two and stays relatively flat as size increases. Lab-grown diamond costs more than moissanite but far less than mined diamond — typically 60–85% below a natural stone of the same 4Cs.

Resale and certification: Lab-grown diamonds come with standard diamond grading reports; moissanite is sold by brand and color grade rather than a 4C diamond report.

Bottom line: Choose moissanite for the lowest cost and maximum sparkle. Choose lab-grown diamond if you want a genuine certified diamond that looks identical to mined, at a fraction of mined pricing.

Lavora Diamonds designs custom rings with IGI-certified lab-grown diamonds, $2,000–$7,000, by text. We'll beat any comparable written quote — or we pay you $200. Text 385-392-7349.