About Boulder Opal:Boulder opals which are mined only in central Queensland Australia, are fund in ironstone. DETAILS: No8821 Natural solid boulder opal loose stone4.61ct. Stone Natural solid boulder opal.
| Gemstone Treatment | Not Enhanced |
| Gemstone Form | Polished |
| Gemstone Type | Boulder Opal |
| Materials Sourced From | Australia |
| Gemstone Shape | Freeform |
| Total Carat Weight | 4.61ct |
| Gemstone Creation | Natural |
| Country Of Origin | Australia |
The orange hue in this gem is bright enough to be noticed but not too loud.