This is almost perfect because the top surface is not pristine. There are minor ripples and a couple of tiny smudges. This resin and pigment disc is way past petri sized and graduated to Supernova. It is is about 7 inches in diameter 1 inch thick. It comes with a permanent keyhole wall hanging attachment. Ships within 24 hours via USPS First Class Mail. Free shipping in the USA, $15 international (per shipment not per item).