A geometric boulder opal with a pink and green swirl on a semi-dark background. 

• 15.03 carats.
• 31.1 x 11.9 mm / 1.22" x 0.46".
  
• 4.6 mm / 0.18" thick.
• Natural solid boulder opal.
• Mined by Sue at her Yaraka opal mine in Queensland, Australia.
• Commercial grade.