Glowstone is a light-emitting block that can be found in branching structures, hanging from ceilings and overhangs in the Nether. If it is broken by using a tool with Silk Touch, the block drops itself. You can get from it glowstone dust, an item obtained from mining glowstone, and is mainly used to create potions with increased strength and decreased duration. Minecraft cursor with Glowstone and Dust game pointer.