Minecraft (Pocket Edition)
Usage / Purpose
Quartz Slabs are used as a half-block building material like all other slab types. Additionally, Quartz Slabs are used to craft Chiseled Quartz Blocks.
Quartz Slabs are stored in stacks of up to 64 units.
It is unclear whether this is a glitch, but Chiseled Quartz Block can be stonecut into Quartz Slabs and then the Quartz Slabs can be crafted back into Chiseled Quartz Blocks without loss or degradation of the material.