Blue-green gneiss hand-cut 20L. The product is available in free length and the thickness of the slab is 1.5 cm - 2 cm. The hand-hewn slabs create a unique landscape, whether you use them in the home, for the yard or the sidewalk. Choose gneiss stone for cladding to enjoy a timeless and durable look. SIM2007 - natural gneiss stone at top prices in Sofia. Order from us - fast and secure delivery to your address. Large stocks and lower prices for distributors and builders. Welcome to our warehouse - Sofia, 125 Okolovrasten Path St.