Luminite

Luminite is a Hardmode ore that drops exclusively from the Moon Lord, usually in stacks of 70-90 (90-110 in Expert mode). It can be used to craft Luminite Bars, which can then be used to make a majority of end-game items, such as the Solar, Nebula, Vortex, and Stardust tools and armor.

Crafting all items requires 1,268 Luminite. This means defeating Moon Lord 15-19 / times.

Trivia

 * It is the only ore that doesn't require any kind of Furnace or Forge in order to be smelted into bars.
 * Despite being an endgame ore, Luminite can be mined with Copper and Tin Pickaxes.
 * Even though Luminite is an "ore," it won't be affected by the Spelunker Potion, Magic Lantern, Metal Detector, or the Suspicious Looking Tentacle.
 * Luminite is the only ore that doesn't have its own designated armor set. Instead, it is crafted into the Solar Flare armor, the Stardust armor, the Vortex armor, and the Nebula armor.
 * Wings made from Luminite are the only craftable wings that do not require Souls of Flight.
 * Luminite is the only ore that does not have a sword designated to it.
 * All items made from Luminite produce a faint glow, even with vanity layered above it.
 * Luminite is referred to by the game's code as "Lunar Ore."

History
Luminite 루미나이트 Luminite Люминит 夜明矿