Dimensions (mm)
55 x 22 x 5mm
Weight (carats)
60 carats
Colors
     blue, green, yellow
NATURAL POLISHED OPAL FROM KOROIT QLD AUSTRALIA
NATURAL COLOR FROM THE OPAL FIELD 
The Koroit opal field is known for the very distinctive type of boulder opal that is found in its mines. Here opal is found as a kernel in small concretions. Each opal is individually cut and polished by hand.