1.80 Round Diamond Drop Earrings 18k Yellow GoldThese drop earrings feature two GIA certified round brilliant cut diamonds, totaling 1. 80 carats, in 18 karat yellow gold with a black rhodium finish. Each . 90 carat diamond is K color, which appears nearly colorless to the eye with a subtle warmth that complements the yellow gold. The SI1 clarity means any inclusions are minor and not visible without magnification. The diamonds sit in collet settings that create a sleek, flush appearance against