Glowstone Ring

Emits a constant light, and also increases your radius for collecting items.
Overview
The Glowstone Ring is a ring that can be crafted after learning the recipe at Mining Level 4. It can also appear in Mystery Boxes, and it may be sold at the Stardew Valley Fair. Wearing it combines the lighting effect of a Glow Ring with the magnetism effect of a Magnet Ring, making it a convenient all-purpose utility ring.
Its effects stack with another Glowstone Ring, an Iridium Band, a Glow Ring, a Magnet Ring, a Small Glow Ring, or a Small Magnet Ring, so it can be combined with other light- or item-attracting gear for stronger results. It is also one of the items that can be used in dyeing, where it serves as a yellow dye at the dye pots in Emily's and Haley's house at 2 Willow Lane.
Official description
Emits a constant light, and also increases your radius for collecting items.