Diamond
These yellow diamonds fluoresce magenta or green under UV light. When the UV light is turned off, they phosphoresce a soft green color afterwards. Diamonds phosphorescing (crystals approximately 1 to 1.5 mm in size), Democratic Republic of the Congo. Photo by James St. John. Licensed under CC By 2.0.
Article: What is Gemstone Luminescence?
Credit: James St. John
| Gemstone | Diamond |
| Natural or man made | Natural |
| Origin | Congo, Democratic Republic of the (Zaire) |
| Gem State | Rough |
| Color | Green |
| Transparency | Transparent |
| Photo phenomena | Glow in the Dark |