2.5cm Mini Small Round Glass Craft Mirrors Mosaic Tiles. Bulk Wholesale Cheap 100 Pieces Pack. Mirrors are Approximately 0.2cm Thick. These are craft mirrors so they can come with slight imperfections. Mirrors can help turn all your arts and craft projects into something spectacular without spending a lot. Even the smallest mirrors make a big impact in a multitude of craft and home décor projects. We carry craft mirrors in all sizes and shapes. We promise to take extra care in packing your orders!