Ceramic Stoneware Bowls - Frederike Martens, a German industrial designer emphasizing glass and ceramics, designed SABLO. Frederike designed the SABLO line taking inspiration from the natural materials of sand, clay, and water. The shapes are soft and inviting with pleasantly rounded edges and a slightly rough surface in some areas and glazed in others. SABO stoneware is made from colored clay and a unique mix of quartz, minerals, and oxide. Stoneware is a group of ceramic products used to produce plates, dishes, cachepots, and bowls, molded at very high temperatures using special casting techniques. The high temperature during the firing process ensures stoneware is more stable than clay and less translucent than porcelain. The colors, shapes, and appearance of the glaze as well as the overall look depend on the firing temperature and time and may vary slightly from piece to piece - each piece is unique and may show individual structures and shades. The clay of SABLO is fired at a very high temperature and, therefore doesn't require all-over glazing.