All of our coasters and trivets are cut from local beach stones including Jasper Conglomerate- Puddingstone, Gowganda Tillite- Black Puddingstone, Granite, Petoskey Stone and other local beach stones. This item has been coated with a high gloss heat resistant finish, that can take temperatures from 400 to 500 degrees without harming the finish. They also have a cork backing to protect furniture from marring. 

Heat Resistant Puddingstone Trivet - 08