A large geometric boulder opal with bright rainbow colours on a lilac-hued, dark background / body tone.

• 28.28 carats.
• 32.1 x 16.9 mm / 1.26 x 0.66".
• 5.2 mm / 0.20" thick.
• Natural solid boulder opal.
• Mined by Sue at her Yaraka opal mine in Queensland, Australia.
• Gem grade.
  
• Opal ID 3078.