Irregular Edges make these coasters interesting and gives it the name of GEODE Coasters. Layers of Translucent and Bright Resin colors with a touch of White. Purchase what you see or Custom Order your Favorite colors! Use as Trinket Trays or to serve Small Bite Food Tastings! Amethyst GEODE Coasters Food Safe and Heat Resistant to 100 deg. $10 each