Greece, circa 400 BC
This is an extremely rare, museum quality ancient gold (approximately 22.83 Kt) necklace with a pair of well detailed horned lion-griffins.
Metal analysis: 95.16 % gold, 3.77 % silver, 1.07 % copper.
Weight is 13.85 grams.
Length is 37.5 cm (14 3/4 in.)
Below are links to lion-griffin themed ancient gold jewelry from the collection of the Metropolitan museum in New York.
https://www.metmuseum.org/art/collection/search/242806