Victorian era, Halley’s Comet brooch modeled in 14k gold and silver set with foiled/closed back diamonds and emeralds.
Approximately 27.6mm by 10.7mm by 4mm. 3 Emeralds range from 1.6mm-2.9mm in size and 8 diamonds are approximately 1.5mm in diameter. Weight is 2.72 grams.