a photopolymer die for foil stamping , foil printing , embossing , debossing , or a combination thereof is disclosed . the die has a metal backing plate on which is mounted a photopolymer layer which has a number of micro - grooves therein . preferably the micro - grooves are arranged in a swatch like pattern . preferably images have adjacent regions each with a different pattern of micro - grooves . the spacing between adjacent micro - grooves can be resolvable by the human eye , or cannot .