18K Gross Wt: 3.78 gm, Net Wt: 3.36 gm, Dia Wt: 2.09 ct 14K Gross Wt: 3.11 gm, Net Wt: 2.69 gm, Dia Wt: 2.09 ct 9K Gross Wt: 2.91 gm, Net Wt : 2.49 gm, Dia Wt: 2.09 ct