The most colorful of all may just be rainbow obsidian ... around 20 million years ago – and the same goes for other types of obsidian too. That’s because obsidian is pretty unstable as ...
Because of this, both of these toolstones are not traded as far from their source as other types of obsidian. Although Desolation Sound, the Sunshine Coast, and Xwe’etay are all within northern Coast ...