Lab Diamond vs Moissanite — Which is Right for You?
Both lab diamonds and moissanite are smart, ethical alternatives to mined diamonds. At Heritage & Co., we stock both — and we'll give you an honest comparison so you can decide with confidence.
At a Glance
| Lab Diamond (Claritas) | Moissanite (Invicta / Aeterna) | |
|---|---|---|
| What it is | Real diamond, grown above ground | Silicon carbide gemstone |
| Hardness | 10 (Mohs) | 9.25 (Mohs) |
| Brilliance | High | Higher (more fire, more sparkle) |
| Certification | IGI (D/VVS1) | GRA (D–F, VVS) |
| Metal | Solid 18K gold | Solid 10K–14K gold |
| Starting price | R44,995+ | R16,995 |
| Lead time | 5–6 weeks | 3–4 weeks |
| Warranty | 2 years | 2 years |
Lab Diamonds — What You Need to Know
A lab-grown diamond is chemically and physically identical to a mined diamond — same carbon crystal structure, same hardness (10 Mohs), same refractive index. The only difference is that it was grown in a laboratory rather than mined from the earth. Lab diamonds are certified by the International Gemological Institute (IGI) using the same 4Cs grading scale used for mined diamonds.
Heritage & Co.'s Claritas collection features IGI D/VVS1 certified lab diamonds in solid 18K gold. Prices start at R44,995+ — significantly less than equivalent mined diamonds, but reflecting the premium nature of a certified diamond in solid gold.
Choose a lab diamond if: you want a certified diamond, you're comparing to mined diamond prices (lab diamonds typically sell for 60–80% less), or the "it's a real diamond" factor matters to you or your partner.
Moissanite — What You Need to Know
Moissanite is a lab-grown gemstone made from silicon carbide — not a diamond simulant, but a distinct gemstone with its own unique properties. Moissanite is harder than sapphire or ruby (9.25 Mohs), highly resistant to scratching and chipping, and produces more fire (rainbow dispersion) than a diamond. It is GRA-certified and available in D–F colourless grades.
Heritage & Co.'s Invicta and Aeterna collections feature GRA-certified moissanite in solid 10K and 14K gold, from R16,995. For buyers who want an exceptional-looking stone in solid gold at a fraction of diamond pricing, moissanite is an outstanding choice.
Choose moissanite if: you want maximum value, you prefer a stone that's unique rather than a diamond equivalent, or you want to allocate more budget to the setting, wedding, or honeymoon.
The Honest Verdict
Neither is "better" — they serve different buyers. Moissanite offers extraordinary value and a distinctive look. Lab diamonds offer the prestige and certification of a real diamond at a fraction of the mined diamond price. Both come in solid gold. Both have a 20-year warranty. Both ship free across South Africa.
The question is simply: what matters more to you?
