Selection: 13.25ct Lightning Ridge Black Opal - Hand Select Gem Rough
- Family: Opal
- Variety: Lightning Ridge Black
- Size: 24 x 20 x 4mm
- Treatment: None known
- Origin: Lightning Ridge, Australia
- Carats: 13.25
Lovely lightning ridge black opal rub that shows a strong blue fire across the face. Piece of cake to calibrate, dome the top, and polish to have a fine black opal.