A small free-form boulder opal with a window of pink and green opal, surrounded by host rock.

• 5.95 carats.
• 18.1 x 11.1 mm / 0.71 x 0.43".
• 4.3 mm / 0.16" thick.
• Natural solid boulder opal.
• Mined by Sue at her Mt Margaret opal mine in Queensland, Australia.
• Commercial grade.