Small round button made of natural Akoya shell. It is a type of pearly oyster. It is thin and slightly wavy, with lovely colors. It is the perfect button for a blouse, for example. Akoya buttons (natural pearly shell) Size: 13 mm in diameter There are 12 colors: Bordeaux, Red, Strawberry Pink, Tea Rose, Grayish Beige, Aqua Blue, Azure Blue, Flag Blue, Fern Green, Lemon Yellow, Kumquat Orange, and Black. Made in France Care advice: Before dry cleaning your garment, it is advisable to unsew the buttons. If you machine wash them, wrap them in household foil, wash the garment inside out to avoid shocks, no soaking, gentle spin, hang without delay. What is Akoya? A type of oyster, it is a naturally iridescent and pearly shell found in Japan.