Cubic zirconia studs never fail to be a popular item in jewellery collections and these crystals are emerald cut to add more options to the often-worn round and square varieties. These studs made from sterling silver each display a clear cubic zirconia measuring 0.6cm x 0.3cm x 0.3cm. With a front to back distance of 1.2cm and weight of half a gram, these earrings are fastened in place by butterfly backs stamped with a 925 metal mark.