The rough and cut sapphires in this image are all natural-color stones from the Missouri River's El Dorado Bar. Just below the 1.53-ct sapphire ring is the largest stone, weighing in at 10 carats rough. In all, the rough in this photo is 64 carats. © Earth's Treasury. Used with permission.
Credit: Earth’s Treasury
|Natural or man made||Natural|
|Origin details||Yogo, Montana|
|Color||Yellow, Green, Pink, Colorless|