Coffin Shaped Alexandrite Moonstone Engagement Rings Set 14K Rose Gold Coffin Wedding Ring Color Changing Alexandrite Band Statement RingThe Alexandrite ring Often described by gem aficionados as emerald by day, ruby by night, alexandrite is the very rare color change variety of the mineral chrysoberyl. That is why the color of Alexandrite changes under different lighting conditions. DETAILS: Material : Solid 10K 14k 18k gold Main Ring: 6*9mm Coffin cut shaped Lab alexandrite. Side stone : Moonstone Matching Band: Round alexandrites and moissanite