Could this be the new color craze? Featuring a Cushion cut Amethyst center, this Paradiso 3064P also has two flanking Princess cut side diamonds, smaller Round diamonds set into the shank, and even has diamonds in between the signature scroll-work. 

http://www.verragio.com/Verragio-Engagement-Rings/Paradiso-Engagement-Rings/PARADISO-3064P