Genuine akoya shell with natural sheen; each piece varies slightly in colour and pattern. Sized for medium to heavy projects and ideal for cardigans, coats, bags and handmade garments. Card includes 4 buttons sized 23mm (7/8") diameter. Compatible with standard sewing needles and threads. Shell buttons are fragile; launder with care and avoid high heat. Wrap in foil during machine washing or drying and polish occasionally to maintain luster.