18-karat yellow gold, Gemfields Zambian Emeralds and diamond hoop earrings These classic and statement hoops boast vibrant oval Gemfields Zambian Emeralds surrounded by brilliant round diamonds for a chic and sophisticated look. Guess what? They can be worn as studs or as hoops, just depending how you want to style them. Featuring 1.87 ct of Gemfield Natural Zambian Emeralds and 0.60 ct of white diamonds on 18k yellow gold.