Painite is a rare calcium zirconium aluminium borate mineral with the formula CaZrAl9(BO3)O15. It is a genuine mineral species, not a metal. Its name honors Arthur Charles Davy Pain, the mineralogist and gemmologist who first recognized the unusual material.

Physical data: typical colors are red, brownish red and orange-red. Painite has a Mohs hardness of 8, a specific gravity of about 4.01 to 4.03, and a hexagonal crystal system. Trace chromium and vanadium can contribute to its reddish coloration.

Type locality: Ohngaing in the Mogok Valley, Mogok Township, Mandalay Region, Myanmar. Painite is associated with the Mogok gem-bearing rocks and is commonly found with minerals such as corundum and spinel.

Generation in Useful Ores: Painite Ore generates only in the Nether. The configured vein has a size of 8 and the placed feature attempts generation twice per chunk at uniformly distributed heights from Y 8 through Y 119. Exposure to air can discard part of a vein, with a configured discard chance of 50%.

Drops: mining Painite Ore normally gives 1 Raw Painite, with Fortune increasing the amount. Silk Touch instead gives the Painite Ore block itself. The mod also provides a Raw Painite Block, Painite Ingot, Painite Nugget, Painite Block and Chiseled Painite Block.

Processing: in the real world, painite is not smelted into an ingot. In this mod, Raw Painite or Painite Ore can be smelted or blasted into 1 Painite Ingot and yields 8 experience. Nine Raw Painite craft into a Raw Painite Block, while nine Painite Ingots craft into a Painite Block. One Painite Ingot crafts into 9 Painite Nuggets, and nine Painite Nuggets craft back into 1 Ingot.

Health sacrifice and Fury: each worn Painite armor piece reduces the player's maximum health by 1 health point (half a heart), so a full four-piece set lowers the normal 20 HP cap to 16 HP (8 hearts). Equipping a piece while above the new cap clamps current health to that maximum; removing Painite restores the maximum but does not automatically heal the player. For a player, Fury activates at 10 HP or less (5 hearts). While active, each worn Painite armor piece adds an extra 60% of that piece's normal defense. While holding a Painite sword, pickaxe, axe, hoe or shovel, the tool gains 60% more attack damage and 60% more block breaking speed, preserving the mod's existing low-health bonus. The spear receives the Fury visual treatment but is otherwise unchanged by that 60% tool bonus. The armor changes to its blue-crimson Fury appearance and displays a small animated molten radial crack/core on the chest. Painite combat tools and the spear also switch to their blue-crimson Fury coloration in the player inventory. For non-player living entities, the activation threshold remains 50% of maximum health.

Crafted gear: Painite is used for a sword, pickaxe, axe, hoe, shovel, helmet, chestplate, leggings and boots. Its tool material is diamond-tier for mining, with 1561 durability, 8.0 mining speed and 10 tool enchantability. Its armor uses a durability multiplier of 33, with 3, 8, 6 and 3 defense for helmet, chestplate, leggings and boots respectively, plus 2.0 toughness and no knockback resistance.