Australian Boulder Opal - 10.91 Ct free-form blue boulder opal - Broken River Mining

10.91 Ct free-form blue boulder opal

Broken River Mining

Regular price $70.00 AUD Sale

A free-form boulder opal with strong blues. 

  • 10.91 carats.
  • 21.6 x 12 mm / 0.85" x 0.47".
  • 4.7 mm / 0.18" thick.
  • Natural solid boulder opal.
  • Mined by Sue at her Mt Margaret opal mine in Queensland, Australia.
  • Commercial grade.