1.47 Old Mine Cushion Diamond Three Stone Ring 14kThis three stone engagement ring features a GIA certified 1. 47 carat old mine cushion cut diamond and two old European cut accent diamonds in 14k yellow gold. The center diamond grades M in color, which shows a warm champagne tint, and SI2 in clarity. Two . 28 carat old European cut diamonds flank the center stone, bringing the total diamond weight to 1. 93 carats. Each diamond sits in an eight prong basket that secures the stones while allowing