A lovely sea green-blue boulder opal with specks of sandstone across the top on one side. 

• 5.36 carats.
• 13.6 x 9.3 mm / 0.53" x 0.36".
• 4.6 mm / 0.18" thick.
• Natural solid boulder opal.
• Mined by Sue at her Yaraka opal mine in Queensland, Australia.
• Commercial grade.