Vintage Edwardian Marquise Diamond Engagement Ring Platinum 14k.  This elegant antique Edwardian diamond engagement ring is constructed in platinum and 14 karat yellow gold, true to the period. The center marquise cut diamond weighs 1.06 carats and is certified by GIA as a perfect D color.  The marquise diamond is set in platinum v-shaped prongs.  The center diamond is accented eight (8) bead and bezel set old cut round diamonds.  The shank of the ring is completed in 14 karat yellow gold finished in a high polish.  This low profile engagement ring is a stunning example of antique craftsmanship.