This SIO-2 Upsala Blue porcelain clay is beautiful stuff for potters of all skill levels. The 3.5 lb package gives you enough material for several projects, and the striking cobalt blue color is naturally integrated throughout the clay. It fires at cone 5-6 (1200°C to 1240°C), which is a common mid-range temperature that works with most typical ceramic glazes. The blue base actually enhances glazes applied over it, making colors pop in interesting ways. What's great about this clay is its versatility - you can throw it on a wheel, hand-build with it, or use it for modeling projects. It has excellent plasticity and consistency, making it easy to work with without being too sticky or too stiff. SIO-2 has been making clay since 1874, so they know what they're doing, and this particular clay is made in Spain with ACMI non-toxic certification. Whether you're a professional potter or just getting started, this porcelain clay offers that smooth, fine quality that porcelain is known for, but with the added bonus of that beautiful blue color that shows through in finished pieces.