This set of 4 Mona Lisa Coaster, can be found at an incredible price at Amazon Store
They are made of Acrylic, and each coaster has one of the four colors. Based on the CMYK color model, these coasters refer to the four inks used in the color printing method, cyan, magenta, yellow and key (black). The true beauty of Mona Lisa is revealed when all four coasters are stacked together. Set of 4 coasters.
There is a bit of assembly required straight out of the box- you have to attach four self-adhesive feet to the bottom of each coaster.
Get these cool CMYK coaster and have a cool gadget for your next party!