The Star in a Bottle is a Lantern variant. On the Desktop version, Console version, and Mobile version, it provides players in its vicinity with an increased rate of mana regeneration (about 2/s). The buff is applied to any players standing within a rectangular area of 170×125[1] ( ) / 100×84 ( ) tiles centered on the bottle, similar to the Campfire and Heart Lantern. Similarly to other Lanterns, the Star in a Bottle is a mechanism that can be toggled on or off if wired, though this does not affect the buff.

On the Old-gen console version and 3DS version, it does not provide any buff, and is only for decorative lighting.

Desktop 1.3.1 Inventory sprite updated. Fixed bug where Star in a Bottle's buff had no effect.

