A set of three boulder opals with interesting patterning.

• 22.54 carats (total).
• Left,  18 x 5 mm / 0.70" x 0.19".
• 3.4 mm / 0.13" thick.
• Middle, 20.4 x 10.1 mm / 0.80" x 0.39".
•  5.2 mm / 0.20" thick.
• Right, 24.6 x 9.6 mm / 0.96" x 0.37".
•  5.1 mm / 0.20" thick.
• Natural solid boulder opals.
  
• Mined by Sue at her Yaraka opal mine in Queensland, Australia.
• Commercial grade.