A large rectangle boulder opal with very bright rainbow colours and a lovely straw pattern.

• 25.52 carats.
• 39.5 x 11.4 mm / 1.55 x 0.44".
• 5.5 mm / 0.21" thick.
• Natural solid boulder opal.
• Mined by Sue at her Yaraka opal mine in Queensland, Australia.
• Gem grade.
• Opal ID 3067.