The Ring of Insight is an item in the Diablo 2 Resurrected game. This item grants the wearer insight, which is a very powerful ability for Mercenaries. It can be crafted anywhere and can help the wearer in battle. To craft it, you must first obtain 4 specific Runes and find 4 empty sockets. Here is how to craft the Ring of Insight. It will take some time, but it will be worth it in the end.
Diablo 2 Ring of Insight Recipe