Koroit opal stones are popular worldwide. In the past Koroit
opals were not considered a rare opal.
But today opal lovers really appreciate the unique veined
opal patterns in this opal.
The prices are still reasonable, so they represent good
value in the middle price range $50 to $150.
Koroit opals under $50 are more ironstone, which is the natural
potch that they are formed in.
Above this price point the patterns are more striking and
veined colours stronger.
Polish does vary on these opals, as if the opal is deep dark
chocolate colour, the polish is good and smooth.
Opal that has caramel or softer tone browns to tans ,are generally
softer and harder to get a good polish and maybe show slight scratches ,as it
is very hard for the opal polisher to
get good polish on these stones
Top Koroit opals are sought after by collector who pay
thousands dollars for a unique Koroit opal
Further Reading
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![81CTS 41x29mm NATURAL BOULDER OPAL [RBP-141]](https://df2sm3urulav.cloudfront.net/tenants/oa/cache/uploads/images/655000-659999/658957/59557b6912815_260x208.jpg)
