Onyx amulet
From Emps-World Wiki
Onyx amulet is made by using a Gold bar on a furnace whilst also having an Amulet mould and a Onyx in the inventory. Doing so requires a Crafting level of 90 and gives 660 experience when made.
The onyx amulet can be enchanted into a Amulet of fury after attaching a Ball of wool to it by using lvl-6 enchant from the Normal spellbook on it.