BLACK MIRRORLUX COMPOSITE QUARTZBlack Mirrorlux Composite Quartz is a black but stunning stone engineered not to fail even after exposure to harsh conditions. Black Mirrorlux Composite Quartz is made of Quartzite, a naturally occurring mineral, which makes up 88 92% of Composite Quartz, which also contains 812% resin, colours, and other compounds. The dark surface only shows visible mirrors and chips, which gives the radiating effect or feel in the home renovation projects.