Material: solid 925 sterling silver, with CZ stones Measurements:Half Circle - 12mm long, 3.8mm wide, with 2 rows of CZ stonesPost: 10 mm long, 0.9mm thicknessPeg cup size: 4mm long and 0.6mm thickness, with 4mm cup.Butterfly backs will be included.NOTES: Pictures show the shape of the item, for actual size please see the measurement. Listing price is for one pair (two items).