A large, free-form violet / deep purple boulder opal with a jet black background.

• 15.53 carats.
• 38.8 x 11.1 mm / 1.52 x 0.43".
• 4.6 mm / 0.18" thick.
• Natural solid boulder opal.
• Mined by Sue at her Yaraka opal mine in Queensland, Australia.
• Top gem grade.
• Opal ID 1226.