Russian diamonds (probably from Siberia) fluorescing under UV light. These crystals are colorless under white light. Photo by James St. John. Licensed under CC By 2.0.
Colorless Glow in the dark Diamond Rough from Russia
Russian diamonds (probably from Siberia) fluorescing under UV light. These crystals are colorless under white light. Photo by James St. John. Licensed under CC By 2.0.
Article: Ultraviolet Testing and Gemstone Identification
Credit: James St. John
| Gemstone | Diamond |
| Natural or man made | Natural |
| Origin | Russia |
| Gem State | Rough |
| Color | Colorless |
| Transparency | Transparent |
| Photo phenomena | Glow in the Dark |