12"x12" piece of Spectrum Stone Opal (218.71SF); hand cut so size is approximate. Fusible (COE 96) but works equally well for stained glass, mosaics or other glass projects. This glass is standard thickness (3mm) and double rolled for an ultra smooth finish. Spectrum System 96tm glass is tested compatible and easy to cut. Additionally, colors are consistent and the glass has a working range that provides a wide margin of error. Stock image, courtesy of Spectrum Glass, is a general representation of the glass; monitor settings impact color seen so actual color may vary.