A small free-form shaped boulder opal with rainbow colours on a black background / body tone.

• 3.65 carats.
• 16.5 x 8.6 mm / 0.64 x 0.33".
• 2.6 mm / 0.10" thick.
• Natural solid boulder opal.
• Mined by Sue at her Yaraka opal mine in Queensland, Australia.
• Gem grade.
  
• Opal ID 3102.