Spelunker Glowstick

Spelunker Glowsticks show the location of nearby treasure. It can be either held or thrown, and will show a yellowish glimmer over detected treasure. It is sold by the Skeleton Merchant for 1 silver and 50 copper.

Note: These glowsticks will display nearby treasures while simply being held, meaning you do not have to throw one for the effect to take place. This creates a use for having a spelunker glowstick on the hotbar while mining: every 30 seconds or so, switch to the spelunker glowstick (do not throw it), and you will be able to see nearby ores as long as you have it selected, which is very helpful in the early game. This technique can later be replaced by equipping a Magic Lantern.

History
Bâton Lumineux de Spéléologue