A rectangle picture stone boulder opal with electric green-blues running down one side. A definite favourite of ours.

• 12.25 carats.
• 23.8 x 10.7 mm / 0.93" x 0.42".
• 4.3 mm / 0.16" thick.
• Natural solid boulder opal.
• Mined by Sue at her Yaraka opal mine in Queensland, Australia.
• Commercial grade.