A long, narrow rectangle matrix boulder opal with a rainbow opal vein.

• 13.15 carats.
• 36.6 x 6.9 mm / 1.44" x 0.27".
• 4.7 mm / 0.18" thick.
• Natural solid boulder opal.
• Mined by Sue at her Yaraka opal mine in Queensland, Australia.
• Commercial grade.