1 Carat Art Deco Tourmaline Engagement Ring 14kThis Art Deco solitaire engagement ring features a 1. 00 carat round tourmaline set in a double claw four prong basket made from 14 karat white gold. The tourmaline displays a yellow green color, which is a less common variety of this gemstone that shows both warm and cool tones depending on the lighting. Round tourmalines maximize the stone's color saturation while their brilliant faceting creates good light return despite tourmaline's lower