3.26 Color Change Sapphire Engagement Ring 14kThis three stone engagement ring features a 3. 26 carat cushion cut color change sapphire and diamond accents in 14 karat yellow gold. The center sapphire displays a rare violetish blue purple hue and shifts color under different lighting conditions. With no heat treatment, this natural sapphire is set in a four prong basket that protects the gemstone while allowing light to enter from all angles. Two (2) . 20 carat pear cut diamonds flank the center