[edit] Ring of Forging

A ring of forging lets you smelt iron ore at 100% success. A Ring of forging has 140 charges before crumbling to dust. Its shortcut name is RoF.

[edit] Making a Ring of Forging

A Ring of Forging is an enchanted ruby ring. It is made by crafting a Ruby Ring and level four enchanting it.

[edit] Price

I'm not sure what they sell for these days if any on does please post it!