Hand cast from a beehive frame, this concrete pin is finished with silver or gold leaf and sealed with a concrete sealant. The pin has a butterfly clutch pin back. The dimensions are variable and range from 1 to 1 1/2 inches in diameter. As each pin is unique, the shipped product may vary from the photo. Concrete is a natural, porous material. Occasionally the pin will slightly darken over time when concrete comes into contact with natural skin oils.