27.21 Ct large teardrop boulder opal

27.21 carats

Natural solid boulder opal

Mt. Margaret

Length: 25.2 mm
Width: 21.9 mm
Depth: 5.2 mm

Opal ID 3292 is a High commercial Grade boulder opal.

Australian boulder opals of this grade are relatively more common than higher gem grades, but are still highly valued. Often, they score highly in one or more valuation factors and may have a ‘gem grade’ stripe or patch as part of the opal.