April birthstone engagement ring in 18K yellow gold vermeil. Center stone cubic zirconia in round shape looks awesome and is fixed in prong setting. 2.00 CT TGW. Available Ring Sizes: 4.0| 4.5| 5.0| 5.5| 6.0| 6.5| 7.0| 7.5| 8.0| 8.5| 9.0| 9.5| and No Extra Charge for Ring Size.