Flower Shell Buttons 18mm Bronze Pack of 10 Bronze Flower Shape Shell Buttons £1.75 Quantity: at £1.75 each Add To Basket 1 in stock. Bronze flower shape shell buttons. Pack of 10 buttons. 18mm heavyweight button.These are mussel shell and therefore chunkier than mother of pearl buttons. Useful medium size, ideal for any sewing, jewellery or craft project. As shell is a natural product there may be some natural ridges, markings and colour depth in the buttons but these only add to their character.Please note - by the very nature of these buttons, by being shaped from natural shell, they may not all be perfectly flat or identical.