Moissanite is a lab-created gemstone made of silicon carbide. Originally discovered in a meteorite crater, it is one of the hardest gemstones on earth (9.25 on the Mohs scale) and is prized for its exceptional fire and brilliance — often exceeding that of a diamond.

Is moissanite a real gemstone?

Yes. Moissanite is a genuine gemstone with its own distinct chemical composition (silicon carbide). It is not a fake diamond — it is a different stone with unique optical properties, including higher fire and brilliance than a mined diamond.

What does GRA certified moissanite mean?

GRA (Gemological Research Association) is an independent gemological laboratory that certifies the quality and authenticity of moissanite stones. All Heritage & Co. moissanite comes with a GRA certificate confirming stone grade and characteristics.

How does moissanite compare to a diamond?

Moissanite has a higher refractive index than diamond, producing more fire and brilliance. It scores 9.25 on the Mohs hardness scale versus diamond's 10, making it highly durable for everyday wear. Moissanite is typically 80–90% more affordable than an equivalent mined diamond.

Oval Cut Moissanite Engagement Rings South Africa

The oval cut is one of the most flattering engagement ring shapes — its elongated silhouette makes the finger appear longer and slender, while its brilliant faceting delivers exceptional fire and light performance. At Heritage & Co., our oval moissanite rings are set in solid 14k or 18k gold and made to order in South Africa.

D colour, VS clarity oval moissanite ranges from 1ct to 3ct in our standard designs, with larger sizes available on request. Popular settings include a classic 4-prong solitaire, an east-west horizontal setting, and a cathedral halo with pavé band. Each ring is made to your exact finger size and dispatched with a moissanite certificate and a hallmarked gold guarantee.

Prices for oval solitaires start from R18,995 in 14k gold. See our full pricing guide for halo and custom options. Free insured shipping across South Africa.