The Pearlstone Block is a Stone Block that has been claimed by The Hallow. It is considered the 'pure' counterpart of the Ebonstone Block and Crimstone Block. Like its evil counterparts, it can be mined with Nightmare Pickaxe or better. In sufficient amounts, Pearlstone Blocks form the Underground Hallow biome in the underground, where Crystal Shards can often be found growing on them. They are not recommended as a building material, as they will spread The Hallow. Pearlstone Bricks, on the other hand, will not.
- Pearlstone can rarely be found in some worlds before entering Hard Mode. This has been verified. It is completely random with between 1 - 5 blocks spawning very close to the surface near the spawn point.
- Max stack increased from 250 to 999.
- Added to the game.