Limited Batch Marbled Glass Coaster (Set of Four) Emerald Sparkle Marbled kiln fused glass coasters. Each one is hand-cut, fused, and sanded. Finished with silicone bumpers on the bottom. The fusing process makes this glass very strong( like Pyrex). Truly one-of-a-kind functional art. 4 in *Made with American-made glass **shown with other variations This listing is for the set as described in the title