We sold many of these earrings back in the 1970s and 1980s. Made in New York by a century-old firm, they feature fine yellow gold chains, with just a few white gold chains mixed in for contrast. The top measures 10mm in diameter; the earrings have an overall drop of 13/4”. They have non-pierced screwbacks; they can be converted to pierced. See matching necklace, GCN1141