protect your table with felt
The bottoms of natural stone and ceramic tiles can be rough and may scratch your table. To protect your table's surface, cut craft felt the same size as each tile. Following the manufacturer's instructions, spray the back of the tiles with spray adhesive. Center the felt pieces on the back of each tile; let dry. Place the tiles right side up on a cutting mat or another protected surface. Use a craft knife to trim away any felt that shows around the edges of the tiles.