This gorgeous green amethyst gemstone is huge, measuring 28x14mm. It is a unique, free-form shape with lovely faceting and a very pretty soft green color. Green amethyst is the popular name for the gemstone prasiolite. It is shown off exceptionally well in a very deep prong setting which allows lots of light to hit the gemstone. The split shank narrows at the back for a comfortable fit.  This ring will get noticed!