| Gemstone | |
| Carat Weight Filtering | 10-20 ctw |
| Gemological Lab | Staff Gemologist |
| Carat Weight | 12.58 carats total |
| Measurements | 23.5 x 18.34 x 4.6mm |
| Opal | |
| Opal Origin Country | Australia |
| Origin Region or State | Lightning Ridge |
| Type | Black Opal |
| Cut Technique | Cabochon |
| Shape | Pear |
| Color Attributes | Blue/Green |
| Common | |
| Birthstone Month | October |