The large but irregular size and shape in this opal's play of color resemble flagstone. Photo by Ra'ike. Licensed under CC By 3.0.
Article: Identifying Opal Patterns
Credit: Ra’ike
Gemstone | Opal Stone |
Natural or man made | Natural |
Gem State | Cabochon |
Color | Black |
Transparency | Opaque |
Photo phenomena | Play of Color |