Walker Zanger has introduced Spa Glass, a collection of glass tile and mosaics. It is available in 1- by 2-in. mosaic bricks; mosaic blends in 1- by 1-, 2- by 2- and 1- by 2-in. sizes; and 4- by 4-in. field tiles in solid colors. The collection's two jewel-toned palettes offer variety for bathrooms, pools, spas or kitchens.