17.30 Ct green-blue matrix boulder opal

A narrow, matrix rectangular boulder opal with strong blue green colours on a dark background / body tone.

• 17.30 carats.
• 29.8 x 9.7 mm / 1.17" x 0.38".
• 5.6 mm / 0.22" thick.
• Natural solid boulder opal.
• Mined by Sue at her Yaraka opal mine in Queensland, Australia.
• Commercial grade.