Leonardo da Vinci was an artist and engineer who is best known for his paintings, notably the Mona Lisa (c. 1503–19) and the Last Supper (1495–98). His drawing of the Vitruvian Man (c. 1490) has also become a cultural icon. Leonardo is sometimes credited as the inventor of the tank, helicopter, parachute, and flying machine, among other vehicles and devices. Leonardo’s notebooks reveal a sharp intellect, and his contributions to art, including methods of representing space, three-dimensional objects, and the human figure, cannot be overstated.

This carving in ruby zoisite is a tribute to his artistic and creative genius.