| Gemstone | |
| Carat Weight Filtering | 20 ctw and up |
| Gemological Lab | Staff Gemologist |
| Carat Weight | 70.72 carats total |
| Measurements | See Product Description |
| Opal | |
| Opal Origin Country | Australia |
| Origin Region or State | Lightning Ridge |
| Type | Black Opal |
| Cut Technique | Cabochon |
| Shape | Freeform |
| Color Attributes | Blue/Green |
| Common | |
| Birthstone Month | October |