Cameo (lapiz lazuli): Empress Maria Theresa as protector of art, science and crafts, Florence 1746. Rare example of depicting technology on cameo and lapis lazuli is also an ancient material used in Mesopotamia and Egypt[1715×1139]

Cameo (lapiz lazuli): Empress Maria Theresa as protector of art, science and crafts, Florence 1746. Rare example of depicting technology on cameo and lapis lazuli is also an ancient material used in Mesopotamia and Egypt[1715×1139]