Rubies and sapphires are some of the most prized gemstones in the world and were also some of the first to be created in a laboratory. These synthetic corundum boules were grown by Auguste Verneuil and associates around 1900 (before he published his notes on his Verneuil process). Photo © Joel E. Arem, PhD, FGA. Used with permission.
Lab-Created Red Ruby Rough
Rubies and sapphires are some of the most prized gemstones in the world and were also some of the first to be created in a laboratory. These synthetic corundum boules were grown by Auguste Verneuil and associates around 1900 (before he published his notes on his Verneuil process). Photo © Joel E. Arem, PhD, FGA. Used with permission.
Article: What is the Best Synthetic Corundum?
Credit: Joel E. Arem, PhD, FGA
| Gemstone | Ruby, Corundum |
| Natural or man made | Lab-made |
| Gem State | Rough |
| Color | Red |
| Transparency | Transparent |