By mixing quartz with baking soda or ash, it is possible to produce glass, but while we in the present often use transparent glass, the old Egyptians wanted an opaque, material with colors from the semiprecious stones. Blue, red, violet or green were created using oxidized metal, which was then and now mixed with ferrets (a fabric for making porcelain pulp or glass). This antique interest for stained glass has inspired SiroccoLiving in our glass designs where we mainly use recycled glass.