An extra-small green and blue boulder opal specimen.

• 69.63 carats / 13.9 grams
• 20.3 x 16.5 mm / 0.79" x 0.64".
• 19 mm / 0.74" thick.
• Natural solid boulder opal specimen.
• Mined by Sue at her Yaraka opal mine in Queensland, Australia.
• Sits on its flat base.