This 11"x11" mosaic is made predominately of smalti. Smalti is richly colored, rectangular slabs of glass. Those in this mosaic are from Murano, Italy. This is the first piece I have created using this material, though, historically, this was the material mosaics were made of. I still prefer stained glass, which you will also find in Red Burst, along with some beads. I love the highly textured effects that you can get with smalti. It is also not usually grouted so that intense color is not diluted in any way. This is my second monochromatic piece. Now that I've done them, I realize that I truly do like to have more variety and contrast in my palette.