This 12.0 x 8.0 mm Color Change Pear Lab Grown Alexandrite has been hand selected by our GIA-certified gemologists for its exceptional characteristics and rarity. A unique crystal structure and combination of elements allow this gemstone to display an optical color-changing effect. From daylight to candlelight this remarkable color-changing gem shifts in hue when shimmering in different lighting.Please note that due to the unique shape and size of this gemstone it is not compatible with certain settings. To learn more about available options please contact us.