14ct yellow gold, 21 mm round stud earrings. The interchangeable centre stones come in four types, including onyx, mabe pearl, lapis Lazulli and malachite, where each centre measures approximately 14 mm, set in a 14ct yellow gold bezel and base, with a screw at the back for easy change. Frames are set with thirty two x round brilliant cut diamonds of estimated weight .96 cts with post and butterfly fittings. Finished weight of combined pieces totals 38.90 grams. Comes with a silver plaque.