2 Carat GIA Diamond Engagement Ring 14k Yellow Gold2 Carat GIA Diamond Engagement Ring 14k Yellow Gold. This stunning engagement ring features a GIA certified 2. 03 carat round brilliant cut diamond with . 22 carats of small accent diamonds set in 14 karat yellow gold. The four large polished prongs give a bright warm contrast to the clear white stone. This is a clean and polished look for a wonderful 2 carat GIA diamond, and for a large classic look you cant do much better!