Yeah I need to find some amethyst, the bonus axe isn't worth much right now. I am on a tier 2 island.
The Foudner's Pickaxe only works on the stuff on the T1 islands.
Stumbled across an exploit on the forums. If you can find a claim that was abandoned after the database fix, you can harvest whatever they had there and it will respawn for you to do it again in just 10 minutes. So if someone built a floor of Burled Wood or put a bunch of Sapphires in a decoration then lost that Claim... you are set ;)