'''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 the gathered wood will include [[Maple]] on non-spawn islands.
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==Trivia==
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*Increases damage of weapons, when used to craft one.
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Onyx is a special gem material, as it is only obtainable via mining the rocks in the underground mine at Freeport with a [[Gold]] or Gem [[Pickaxe]].