painted mechanical insect and ornate jewelry made of large diamonds

Left, An automaton in the form of a June bug, ca. 1600. Right, The Green Dresden diamond, the largest of its kind. Its color comes from naturally occurring radiation.

Museumslandschaft Hessen Kassel, Astronomisch-Physikalisches Kabinett; bpk Bildagentur/Rüstkammer, Staatliche Kunstsammlungen, Dresden, Germany/Jürgen Karpinski/Art Resource, NY