7 x Opal from Koroit, Australia
Koroit, Paroo Shire, South West Queensland, Australia
Total size: 4,6 gram
Koroit Boulder Opal
Total size: 4,6 gr
Lot with 7 Koroit Boulder Opal
Some of them have a great color play, and some have nice patterns.
I like to keep them together because they show different colors and patterns.