All gem varieties of corundum can be synthesized through various methods, including the coveted “star stone” sapphires and rubies. Synthetic “Heller Hope” star corundum gems, each cabochon 8 x 10 mm. Photo © Joel E. Arem, PhD, FGA. Used with permission.
Lab-Created Translucent Red Star Sapphire Cabochon
All gem varieties of corundum can be synthesized through various methods, including the coveted "star stone"sapphires and rubies, such as these "Heller Hope" star gems. Photo © Joel E. Arem, PhD, FGA. Used with permission.
Article: What are Lab-Grown Sapphires?
Credit: Joel E. Arem, PhD, FGA
| Gemstone | Sapphire, Corundum |
| Natural or man made | Lab-made |
| Height | 10 |
| Width | 8 |
| Gem State | Cabochon |
| Color | Red, Yellow, Green, Blue, Pink, White |
| Transparency | Translucent |
| Photo phenomena | Asterism |