Pearlsand Block

Pearlsand Block is the Hallowed form of normal Sand Block. The only real difference between the two is that Pearlsand can spawn Light Mummies and Hallowed enemies and cannot be used to craft Glass, while normal sand only spawns normal mummies and normal Desert enemies and can be used to craft Glass.

At hardmode any hallowed block will turn regular sand blocks that are up to three squares away into Pearlsand.