Diatomaceous blended earth coaster

Diatomaceous blended earth coaster ** This item is made of special earth called Diatomaceous earth. This clay absorbs water immediately. It can help to keep desktop dry. size: 12.0 x 12.0 x 1.8 cm All of our products are handmade, Ingredient: food grade D. earth, plaster of Paris, paper fiber Function: Humid absorber Usage: coaster Suggestion: Put it outside on a sunny day to dry out after 2-3 weeks. Picture is for reference. Please be kind to know, our products are handmade. It can't prevent bubbles. More color coaster will be added later.