Synthetic sapphire
Lab-grown (synthetic)
Lab-grown corundum in every colour, the same as natural sapphire. Very hard and good in rings worn every day.
Hardness (Mohs): 9
Lab-grown (synthetic)
Lab-grown corundum in every colour, the same as natural sapphire. Very hard and good in rings worn every day.
Hardness (Mohs): 9