Black Diamond Stud Earrings 14kt White Gold. Each stud earring has a four-prong basket setting containing one round brilliant cut black diamond for an approximate weight of (3.09cttw). There is no clarity or color classification for black diamonds, they are assumed to be color enhanced by the irradiation method. The earrings were cast, assembled and handset with a bright polished finish. They are stamped 14K and are in excellent condition. Included is an insurance appraisal of $1322.00.