A large teardrop boulder opal with ocean greens and blues.

• 21.16 carats.
• 30.9 x 17.4 mm / 1.21 x 0.68".
• 4.9 mm / 0.19" thick.
• Natural solid boulder opal.
• Mined by Sue at her Yaraka opal mine in Queensland, Australia.
• Gem grade.
• Opal ID 3077.