| Vergleichsmerkmal | Lab-grown sapphire | Mined sapphire | Moissanite | Cubic zirconia (CZ) |
|---|---|---|---|---|
| What it is | Real sapphire crystal, grown | Real sapphire, mined | Silicon carbide | Zirconium oxide |
| Hardness (Mohs) | 9 | 9 | 9.25 | 8–8.5 |
| Where the colour lives | In the crystal — never fades | In the crystal | Mostly colourless | Dyed, can dull |
Mohs hardness describes resistance to scratching, not resistance to every type of damage.
