It measures around an inch and a half. It is made out of shrinky plastic and varnished with glossy acrylic varnish (that only adds a little bit of a shine to it and protects it from wear and tear). It has a silver brooch pin glued at the back. Comes with cute card back and safely packaged in a bubble envelope! Mind you, since each item is uniquely handmade, there might be slight differences from the one pictured.
There are other brooches available, have a look in the brooches section!