A small boulder opal with bright, rolling rainbow colours.

• 6.09 carats.
• 21 x 9 mm / 0.82" x 0.35".
• 3 mm / 0.11" thick.
• Natural solid boulder opal.
• Mined by Sue at her Yaraka opal mine in Queensland, Australia.
• Gem grade.
• Opal ID 19.