Corundum
Synthetic corundum fluoresces orange under ultraviolet light. This material is red-purple in incandescent light and grayish purple in natural light. Synthetic corundum, 368nm fl, photo by Bob Fosbury. Public Domain.
Article: Alexandrite Buying Guide
Credit: Bob Fosbury
Gemstone | Corundum |
Natural or man made | Lab-made |
Gem State | Rough |
Color | Red |
Transparency | Transparent |
Photo phenomena | Glow in the Dark |