21.02 Ct large boulder opal

A beautiful large marquise-shaped boulder opal with pastel colours.

• 21.02 carats.
• 42.5 x 11.6 mm / 1.67 x 0.45".
• 4.6 mm / 0.18" thick.
• Natural solid boulder opal.
• Mined by Sue at her Mt. Margaret opal mine in Queensland, Australia.
• Commercial grade.