Cistrum, Greek percussion instrument, in emerald plasma. The four rods symbolize the elements, the oval shape the moon. Sistro in plasma di smeraldo. Copperplate engraving by Giovanni Battista Galestruzzi after Leonardo Agostini from Gemmae et Sculpturae Antiquae Depicti ab Leonardo Augustino Senesi, Abraham Blooteling, Amsterdam, 1685.
Cistrum, Greek percussion instrument, in emerald plasma. The four rods symbolize the elements, the oval shape the moon. Sistro in plasma di smeraldo. Copperplate engraving by Giovanni Battista Galestruzzi after Leonardo Agostini from Gemmae et Sculpturae Antiquae Depicti ab Leonardo Augustino Senesi, Abraham Blooteling, Amsterdam, 1685.