Width: 20mm Height: Approximately 1.5-3mm Total: 20 pieces + a few extra There are scratches due to the natural material. * The back side is particularly uneven. * The front side is also not flat and may be distorted. * Colors, shapes, and patterns vary. Colors may differ from the photos. Some may be more yellowish than in the photos. Although unused, these are old items, so please purchase them if you understand this. In stock.