Synthetic corundum gems, all 8 x 10 mm. Photo © Joel E. Arem, PhD, FGA. Used with permission.
Lab-Created Red Corundum Faceted
Synthetic corundum gems, all 8 x 10 mm. Photo © Joel E. Arem, PhD, FGA. Used with permission.
Article: What is the Best Synthetic Corundum?
Credit: Joel E. Arem, PhD, FGA
| Gemstone | Corundum |
| Natural or man made | Lab-made |
| Height | 10 |
| Width | 8 |
| Gem State | Faceted |
| Color | Red, Yellow, Blue, Purple |
| Transparency | Transparent |