Spelunker Potion

The Spelunker Potion is a buff potion which buffs the player with Spelunker. The buff gives a slight purple glow to all nearby ores, gems, chests, Crystal Hearts, pots, and alchemical herbs. The buff lasts for 5 minutes, but can be cancelled at any time by right-clicking the icon. Since it faintly illuminates the surrounding blocks, you might be able to see caves that contain ore on the walls.