Adamant ingot III

An adamant ingot III is an item used in the Artisans Workshop to make Smith's helm (adamant), Smith's chestplate (adamant), Smith's gauntlets (adamant), and Smith's boots (adamant). They can be made by using 4 adamantite ore and 22 coal on the smelter, you can also return any ingots to the Smelter for the full cost of the supplies. At current market prices, it costs to make one of these.

Experience
Smithing with adamant ingot iii can yield over 200k smithing xp per hour.