A small half-moon shaped boulder opal with a fiery green wave across semi-transparent opal. 

• 3.32 carats.
• 15 x 6.8 mm / 0.59 x 0.26".
• 3.7 mm / 0.14" thick.
• Natural solid boulder opal.
• Mined by Sue at her Mt Margaret opal mine in Queensland, Australia.
• Commercial grade.