An extra large matrix boulder opal with a colourful opal vein.

• ~ 105 carats.
• 21 grams.
• 40 x 31.9 mm / 1.57" x 1.25".
• 7.8 mm / 0.30" thick.
• Natural solid boulder opal.
• Mined by Sue at her Yaraka opal mine in Queensland, Australia.
• Commercial grade.