Glowstone Ore

Glowstone ore is an ore found only in the Iron Hills biome and Blue Mountains biome, where it is relatively common. When mined, it drops glowstone dust, which explains the prevalence of glowstone blocks in Dwarven structures. A pickaxe of at least stone or equivalent strength is required to mine this ore. This is currently one of only four ways to gather glowstone, the others being from Witches, Witch Huts, and the Nether. This also makes it the only way to gather glowstone in Middle Earth.