Vintage Hummingbird Brooch w/ Diamonds & EmeraldsVintage Hummingbird Brooch w Diamonds Emeralds. This petite brooch is a sweet rendition of a hummingbird. Made in both 18 karat white and yellow gold the torso of the bird is set with pave round brilliant diamonds that pop against the white metal. The in flight wings and tail feathers of the humming bird are completed in yellow gold and finished with a feather texture. The head of the hummingbird is mixed metals and set with a round emerald eye.