This is a set of glass tiles for crafting. The green set includes square tiles (approx. 14mm square) + mosaic tiles. The warm color set includes white, yellow, orange, and red square tiles (approx. 9mm square). The grout is white. Thank you for looking. These have been stored at home for a long time. The grout is the type that is mixed with water for use, but I cannot guarantee its quality, so I am selling it at a bargain price. Please refrain from purchasing if you are sensitive to this.