Precisely how opals form is still a mystery to science. "Opale (Ethiopie) 5" by Parent Géry is licensed under CC BY-SA 3.0.
Translucent Orange Play-of-Color Opal Stone Rough from Ethiopia
Precisely how opals form is still a mystery to science. "Opale (Ethiopie) 5," photo by Géry Parent. Licensed under CC By-SA 3.0.
Article: How Do Opals Form?
Credit: Géry Parent
| Gemstone | Opal Stone |
| Natural or man made | Natural |
| Origin | Ethiopia |
| Gem State | Rough |
| Color | Orange |
| Transparency | Translucent |
| Photo phenomena | Play of Color |