XISTO is inspired by various types of metamorphic rocks easily identifiable as being strongly laminated. The color is due to blue and green-azure minerals. Shale is a kind of sedimentary rock from which oil and sulfur are extracted. When heated at high temperatures, it turns into bitumen. A 100% handmade carpet that combines the use of hand-tufted and overtufting techniques with different materials - natural wool and botanical silk.