A large, free-form boulder opal with purple and green swirls.

• 18.49 carats.
• 26.1 x 19.1 mm / 1.02" x 0.75".
• 5.6 mm / 0.22" thick.
• Natural solid boulder opal.
• Mined by Sue at her Yaraka opal mine in Queensland, Australia.
• Commercial grade.