A set of two small matrix boulder opals.

• 9.68 carats (total).
• Left, 24.6 x 6.7 mm / 0.96" x 0.26".
• 3.3 mm / 0.12" thick.
• Right, 19.1 x 8.6 mm / 0.75" x 0.33".
• 3.6 mm / 0.14" thick.
• Natural solid boulder opals.
  
• Mined by Sue at her Yaraka opal mine in Queensland, Australia.
• Lower commercial grade.