7.44 Ct free-form blue blouder opal

A royal blue curvy boulder opal with a free-form shape.

• 7.44 carats.
• 18.2 x 13 mm / 0.71 x 0.51".
• 5 mm / 0.19" thick.
• Natural solid boulder opal.
• Mined by Sue at her Mt Margaret opal mine in Queensland, Australia.
• Lower commercial grade.