12.66 Ct triangle boulder opal

A rectangle boulder opal with pink and green flashes in the sun and very unusual patterning.

• 12.66 carats.
• 30.6 x 14.2 mm / 1.20" x 0.56".
• 4.2 mm / 0.16" thick.
• Natural solid boulder opal.
• Mined by Sue at her Yaraka opal mine in Queensland, Australia.
• Commercial grade.