NEPTUNIUM CRYSTAL

The Neptunium Crystal is one of the three ingredients to the Ender Key, it is crafted at the Haven Altar with the Ancient Jewel, a diamond, and the Ancient Gemstone as shown on the right. The Neptunium Crystal is also one of the ingredients to the Neptunium Pickaxe. The Neptunium Crystal is used to summon the Neptunium Golem at a Summoning Station only after Helvius has been defeated.