Opalised fossils aren't always colourful like you would expect opal to be. Why not? I asked Jenni Brammall at the Australian Opal Centre in Lightning Ridge just that!

Opalised fossils aren't always colourful like you would expect opal to be. Why not? I asked Jenni Brammall at the Australian Opal Centre in Lightning Ridge j...

You might also like: A World Tour of Opal Part 1: https://www.youtube.com/watch?v=ZEspO...

A World Tour of Opal Part 2: https://www.youtube.com/watch?v=GH4Sj...

Stuff that Looks Like Opal but Isn't: https://www.youtube.com/watch?v=ipfvC...