Natural loose cut Australian Andamooka matrix opal highly polished all around
from Andamooka, South Australia.
71.6 mm x 25 mm x 11 mm of maximum thickness
Weight: 12.2 grams (61 carats)
Bright various colours with red
This type of matrix is usually treated to bring out the colours.
This one being so good and bright is natural, not treated (very rare for this quality)
Could be made into a reversible opal pendant