Elegant Berlin Iron and gold cameo necklace in the form of a mesh collar.c.1810
The plaque cameos portray the Dying Gaul(after the statue in the Capitoline,Rome),the Bath of Venus, and  an image of an industrious Cupid with a pick axe and rocks with the motto “Avec le temps” meaning ‘in time your heart will fall’.The cameo clasp depicts a classical female head possibly Sappho.
For similar example see p.185,European Cast Iron by Anne Forschler-Tarrasch.
Central cameo 1 inch across.
Full length of collar 17inches.