'''Onyx''' is a special gem material. It is only obtainable via mining the rocks in the underground mine at Freeport and from certain rocks at [[Cannoneer's Key]] with a Gem [[Pickaxe]].
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'''Onyx''' is a special gem material. It is only obtainable via mining the rocks in the underground mine at Freeport and from certain rocks at [[Cannoneer's Key]] with a Gem [[Pickaxe]]. When used on an Axe in the [[Eastern Sea]], the gathered wood will include [[Maple]].