Cushion Cut Teal Sapphire & Diamond Engagement Ring 14kCushion Cut Teal Sapphire Diamond Engagement Ring 14k. This amazing teal colored 1. 90 carat cushion cut sapphire is accented by . 18 carats of round diamonds and set in 14 karat white gold. The sapphire has a very interesting shade of teal, where it appears a rather dark blue from the top, but at flatter angles a lovely green comes through. The strong claw style prongs emerging from the diamond adorned basket also add some gorgeous sparkle and