Gloria Quartz SlabQuartz is named after the quartz crystal which is one of the strongest minerals on earth. Quartz Slabs are seminatural stone products that have 93% quartz crumbs, a small amount of polyester, and very little cement to fix all these together. Our Gloria Quartz Slab selection is one of the most remarkable and pure black quartz selections. It has a solid black color that makes itself distinguish. You feel like you are lost in a deep, extensive ocean, and