A large geometric boulder opal with greens and blues and a black background / body tone.

• 16.71 carats.
• 32.3 x 10.5 mm / 1.26 x 0.41".
• 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 1219.