300 Ct navy blue boulder opal specimen

A lovely boulder opal specimen that is dark blue with a natural white stripe running down one side.

• ~ 300 carats / 60 grams
• 45.2 x 40.1 mm / 1.77" x 1.57".
• 19.4 mm / 0.76" thick.
• Natural solid boulder opal specimen.
• Mined by Sue at her Mt Margaret opal mine in Queensland, Australia.
• Stands on its own in two directions (only one pictured).