Design your own uniquely personalized mosaic coaster with this reusable Mosaic Coaster Mold! Just mix your concrete according to the manufacturer's instructions, pour the mixture into the form, and shake from side to side to level. Smooth the surface with a trowel or similar tool, then decorate with beads, stones, hand prints and more! Handmade coaster stones are the perfect one-of-a-kind gift for Mother's Day, Father's Day, Grandparents' Day, birthdays, Christmas, and just because…