Amethysts can range from pale lilac to deep violet. These color variations are caused by many factors including iron content. Basically, the higher the iron, the deeper the purple. Today, most gem dealers use heat to deepen an amethyst's color artificially.Print Collection has commissioned artist Julian Montague to create our State of America series. These bright, bold, graphic images iconicize the quirky Official State Insignias from around the nation. Red States and Blue States may now be a thing of the past.