A lovely triangle boulder opal with lovely dark blue and green swirls.

• 7.21 carats.
• 23.3 x 10.6 mm /  0.91 x 0.41".
• 3.6 mm / 0.14" thick.
• Natural solid boulder opal.
• Mined by Sue at her Yaraka opal mine in Queensland, Australia.
• Commercial grade.