Round cork coaster stock photo. Image of natural, corkmat 89983394 Personalized City Zip Coasters (Acacia or Cork) Seeds & Sawdust Round Cork Coasters, 4 Inch at 25 piece in New Delhi ID: 2856878327848 Round Cork Coaster Set 16 PC Betus Natural Cork Coasters With Round Set With Metal Holder Storage Caddy. This set of four round coasters is crafted from natural cork, offering a sturdy and lightweight design. Each coaster features a slightly raised edge, forming a shallow well for secure placement of items.