Emerald and Diamond Pendant, 18K Yellow Gold 4.18 Carat Emerald with .60 Carat Diamond Pendant Necklace, 18 Karat Modern 18 Karat White Gold Emerald and Diamond Statement Pendant and Carved Emerald with Diamond Pendant Set in 18 Karat Gold Settings For Emerald and Diamond Studded Pendant in 18 Karat White Gold For Sale at Carved Emerald with Diamond Pendant Set in 18 Karat Gold Settings For. A simple and elegant pendant set with a rectangular emerald measuring approximately 5 3 mm (estimated weight 0. 30 carats). Above the emerald is a small round diamond measuring 1. 4 mm, adding a subtle accent of brilliance. The pendant features a hallmarked bale and is suspended from an 18 carat gold neck chain measuring 18 inches in length. Total combined weight: 2. 1 grams.