Iridium Band is a ring in Stardew Valley. It can be obtained from crafting using 5 Iridium Bars, 50 Solar Essences, and 50 Void Essences.
Can also be found in treasure chests when fishing. (Comment: Found one in the lvl 60 lake)
The glow radius is twice as big as the bright ring.
Iridium Band is unlocked from Combat Level 9.