The Construction Amulet is an ancient amulet item that is crafted from a Green Gem.
While equipped, crafted items will require half the materials they would normally consume, rounded up. It degrades by 20% each time an item is crafted. It also will provide the player with a passive +2/min Sanity boost.

Considering the limited amount of Construction Amulets you can craft it's advised to use them only to make items that require rare or hard to get materials, such as items in the Ancient Tab.



This amulet seems to have the same model as the Life Giving Amulet.
When used at 20% durability left (last use) the amulet's effect will not work and you will still use the full requirements to build something if you have all the materials needed in your inventory. If only half of the materials needed is in your inventory though, you will only spend those, making the amulet's perk take effect as normal.