Vintage Tourmaline & Diamond Earrings in 14kVintage Tourmaline Diamond Earrings in 14k. These mid century earrings feature 7. 01 carats of Indicolite blue tourmaline and 2. 04 carats of diamonds and are set in 14 karat white gold. The rare blue tourmalines are prong set on the corners above a chaotic cluster of round brilliant and baguette cut diamonds. The chaos and asymmetry of the diamond layout adds such an interesting depth as they are anchored to the emerald cut primary stones. The