Help Identify Stone

[Sungs80]

Greetings,
New to the forum and first post. Hopefully I have the correct section here.

We have had this stone for many years in the family and I have no idea anymore what it is called.
Can someone please assist me in the name of it. I tried referencing it to other stones but because of the pattern/color I was not comfortable with knowing for sure.

Thanks for the help

 

[EC8]

Boulder opal.

 

[Sungs80]

Thank you for the help

 

[IcePhoenix]

A boulder opal as @EC8 said and a cute one I might add

 

[chatoyancy]

That’s a lovely boulder opal. Is it in a ring or a pendant?

 

[LemonMoonLex]

Its specifically called "koroit boulder opal" and yours is a lovely one! Enjoy!

https://www.opalauctions.com/learn/opal-information/koroit-opal-information

 

[ilovegemstones]

It is certainly an Australian boulder opal but one cannot say it is Koroit. It can also be from the Yowah or a different mine in Australia.