Joy glass is made of coloured glass 20x20x4mm. Joy glass is resistant to colour fading, frost, abrasion, acid and alkaline attacks, as well as temperature variations.
Tiffany glass is available in the sizes 10x10 mm. Besides the 15 opaque colours - not transparent glass colours - the range offers seven highly transparent glasses. Tiffany glass is usable on both sides. One side is smooth, the other one gets a slight structure as you can see very well e.g. on T028 ice blue or T059 brown. Tiffany glass is suitable for indoor and outdoor mosaics.