In the early 1470s Lorenzo de' Medici gave him the job of designing the tomb of Lorenzo's father Piero and uncle Giovanni. The tomb that Verrocchio designed was very unusual. He made a large "sarcophagus" (stone coffin) out of beautiful dark red stone, trimmed with green stone and sculptured leaves of bronze. Instead of being placed against a wall in the usual way, the tomb was designed to stand in an archway leading into the Sacristy. Verrocchio designed a net that looks as if it is made of rope, but is made of bronze. This network makes a screen in the archway, so that people who look at the tomb can see through into the sacristy.