Absorbent Stone Coasters Set of 4 每 Edged, Grooved, Quick-Drying Natural Diatomaceous Earth - Decor Drink Coaster for Tabletop Protection - Thirsty Stone Round 4 Inches in 4 Colors 每 Gift Experience superior moisture absorption with these natural diatomaceous earth coasters, featuring ultra-porous technology that instantly captures condensation and dries within minutes. The unique grooved design prevents cups from sticking while raised edges contain excess moisture, making them ideal for both hot and cold beverages. Crafted with a substantial 0.4-inch thickness, these heat-resistant coasters protect surfaces from hot drink marks while maintaining a smooth bottom to prevent scratches. Made from eco-friendly, non-toxic, and odorous diatomaceous earth, they offer sustainable durability for commercial use. Each 4-inch diameter set includes four coasters with two distinct patterns and four vibrant colors, perfectly accommodating various cup sizes. These versatile coasters enhance tea service presentations, protect valuable inventory, and complement diverse tabletop aesthetics from modern to traditional settings.zq20260204091311