Although it takes up little of the stone's face, this bright yellow feather is certainly delightful. Black opal (Stayish Mine, Wollo Province, Ethiopia), photo by James St. John. Licensed under CC By 2.0.
Article: Identifying Opal Patterns
Credit: James St. John
|Natural or man made||Natural|
|Origin details||Stayish Mine, Wollo Province|
|Photo phenomena||Play of Color|