Luminite

I don't think luminite is droped by the pillars.

Luminite is a Hardmode ore dropped exclusively by the Moon Lord in stacks of 70–90. It can be used to craft Luminite Bars, which can then be used to craft several end-game items, like the Solar, Nebula, Vortex, and Stardust tools and armor.

Crafting all items (excluding ammunition) requires a total of 317 Luminite Bars (1,268 Luminite; requires defeating the Moon Lord 15–19 / times). Crafting all items pertaining to one type of Lunar Fragment (i.e., armor, wings, pickaxe, and hamaxe) requires 68 Luminite Bars (204 Luminite) in addition to 85 of the Lunar Fragment; this requires defeating the Moon Lord only 3 / times.

Tips

 * Selling Void Monoliths nets (%) more than selling the required Luminite or an equivalent number of Luminite Bars.

Trivia

 * In contrast to most ores, its bars are not crafted at a Furnace or forge, and it is not detected by the Spelunker Potion, Magic Lantern, Metal Detector, or Suspicious Looking Tentacle. It also does not have a specific associated armor set or sword, does not have an alternative ore, and despite being an endgame ore, it can be mined with any tier of pickaxe.
 * Luminite is referred to as Lunar Ore in the game's source code.
 * Wings made from Luminite are the only craftable wings that do not require Souls of Flight.

History
Luminit Luminite 루미나이트 Luminite Люминит 夜明矿