A free-form matrix boulder opal with a beautiful combination of rainbow colours.

• 20.08 carats.
• 28.1 x 14.7 mm / 01.10" x 0.57".
• 5.8 mm / 0.22" thick.
• Natural solid boulder opal.
• Mined by Sue at her Yaraka opal mine in Queensland, Australia.
• Commercial grade.