MSI White Montreal - Quartzite SlabMSI White Montreal Quartzite Slab brings white quartzite to the slab format metamorphic crystalline body, water clear edge cut, and the visual rarity that justifies its specification. Each slab carries variation that natural stone makes inevitable; the design move is to specify the slab early and let the rest of the room respond to its character. Polished, honed, or leathered finishes pull different qualities from the same stone the choice depends on