1.25 Old Mine Cushion Diamond Engagement Ring 14kThis three stone engagement ring features a 1. 25 carat old mine cushion cut diamond and emerald accents in 14 karat yellow gold. The center diamond has an M color grade, which gives it a faint warm tint, and VS1 clarity with minimal inclusions visible only under magnification. Set in a four prong basket with claw prongs, the antique cushion cut diamond displays the chunky facet pattern characteristic of hand cut vintage stones. Two (2) . 05 carat