Some examples of jewelry from the 8th until 1st century BC:
Celtic well sanctuary of Dux, CZ, 2nd half 4th century BC
Bronze
similar arm rings in CZ, Austria, Slovenia,…
Photo credit: A. Schumacher, NHM Wien.
Celtic fibula from Hallstatt, 8th – 5th century BC
Castle museum Linz, Austria
Photo credit: Wolfgang Sauber
Typical Celtic glass beads, 3rd century BC
Celtic chariot burial at Mezek in southern Bulgaria
Mycenaean necklace, c. 12th century BC
British Museum, London
Ancient Greece (?), 330-300 BC
The Hermitage Museum, St Petersburg, Russia
Earrings with the pendant cocks in white enamel, Etruscan, 300 – 200 BC
British Museum, London
Etruscan earrings
found in Dolianova, Sicily, Italy
Museo Archeologico Nazionale di Cagliari
Gold and agate earrings, 1st century BC
Greece
If you know about missing informations of origin or copyright please let me know!