**not Kay's, tagging for exposure** 1/5 carat of diamond total, each stud is 1/10 carat so about 3mm I would guess 14k yellow gold, they were rhodium dipped to make them white but they are slowly turning back to yellow I do not have any papers since they were a gift they are stamped on the post but I couldn't get a clear picture ** Zales, Riddles Jewelry, Helzberg Diamonds, Roger and Holland's **