Sandstone Coaster, Heart, 4.3" x 4.4" x 0.3", Off White to Tan, (natural color range) with cork backing. All sand stone coasters are sold in increments of -4-. Single sample tiles are available through your Conde Account Manager. Cork backing has a glue side that is attached to the coaster after sublimation.Excellent sublimation coaster to pair with wrought iron holders. Image with vector graphics and spot colors. These coasters are made of natural stone and may vary in base color from individual coaster to individual coaster or from lot-to-lot.