A random selection of glass tiles; you will get a selection of finishes including the milky opaques, a few iridescent tiles, transparents, some gemme and the usual bubbly numbers.  A really economical way to increase your palette. 

Individual tiles mostly measure 20 x 20mm and are around 4mm deep but there will be some variation in depth. Tiles come loose in plastic bags and are almost all sold without any paper backing, but you might have to soak paper backing off a very small proportion. Use Leponitt or other wheeled cutters for cutting glass tiles.