Black and White Tones Mix Value Pack - Stained Glass / Mosaics (3 Pounds) 3 Pounds. Both transparent and opaque glass included. Perfect for creating stained glass stepping stones or any number of other stained glass projects. Use them to decorate frames, ceramics, mirrors, vases, trays and more. Pieces range from 1/4" to 1-1/2" in size. More than enough for multiple projects.