This linear design in made of 14 karat rose gold and is hand set with a faceted oval genuine Alexandrite and accented with a tiny round brilliant diamond. The ring is just under 4mm in width and measures a size 6. It could be sized larger or smaller by up to 1.5 sizes. The Alexandrite has a natural color change effect, depending on the wavelength of light it is in, and the color change is often referred to as resembling 'an emerald of the day, and ruby of the night'. Alexandrite is one of the rarest gems on earth!