Gem Rainbow Flash Rare Duck Creek Boulder Opal 55.3 ct

Gem Rainbow Boulder Opal 

Shine Bright Multi Color Fire, Large Oval Shape, Top Polished.
This Gem Rainbow Boulder Opal has a full face of multi color. This means there is no break in color with ironstone showing.
Other Boulder mining regions rival this level of quality boulder. Such a large piece of full-face Opal like this is very hard to discover. Especially from this infamous region known for its great quality of opal. This is a true collectors opal that is very hard to even find on the market.
This Gem Rainbow Boulder Opal is an ideal addition to your collection or make into stunning opal jewelry.


Mined in Duck Creek, Queensland, Australia

This Gem Rainbow Boulder Opal discovery was in Duck Creek, Queensland in the 1980’s.
Mining efforts in Duck Creek mostly ceased a long time ago.
Only recently some miners have gone back to old mine sites however not much has been found.

Duck Creek is host to one of the few places that anyone can legally go and fossick above ground for free.
Watch Geoff from the Brisbane Opal Museum explain where to do this here: https://www.instagram.com/reel/Cu3yJ2OR13j/?igshid=MzRlODBiNWFlZA%3D%3D&fbclid=IwAR38EAwT_J0rpMRrzZ6ISKtZJ55KfXQ53E0fKr0iZV5J7kEr5_EQcR7vhOE

The formation of Opal

Did you know that Opals such as this Gem Rainbow Boulder Opal are a stunning type of gemstone formed by a chemical reaction between silicon dioxide and water? As water moves through the earth, it picks up silica from sandstone and carries it into cracks and voids, which form naturally or through decomposing fossils. Once the water evaporated, it left behind a silica deposit. Over time, these deposits have transformed into the stunning and lustrous rocks we call Australian Opals.
It's fascinating to note that Opal discoveries are from a vast inland lake that once covered the Australian desert.
Read more about Opal formations 

Watch more opals on our YouTube Channel