Quartz 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 Mystral Blue Quartz Slab selection is one of the most premium black quartz selections. It is actually very dark blue that is very hard to distinguish from black. It looks like someone adds some glitter powder to it, shiny and perfect. Efes Fabrik provides these quartz slabs both polished and honed. Our Standard slab sizes are 152x300 cm, and Jumbo slab sizes are 164x330 cm. The available thicknesses are 2, and 3 cm. If you are looking for premium quartz slabs, we are a phone call away.