- Total 25 pieces; 2"x4" size Thickness: 3mm - Stained Glass Sheets Good choice for Mosaic Projects and Small Glass Works - Please note that the actual glass may vary from the photo. A photo image of the glass is meant to reflect the general idea of its color and texture. The display setting of your electronic device may also alter the image or the color/texture of glass. Also, all glass sheets are hand-cut and their dimensions can vary by up to 1/8” Expect a chipped corner or side.