Bighorn

Well, this is Pronghorn on steroids.  A substantial (!) 18k green gold ring set with a 10.65 ct buff-top citrine.  Buff top means it has a cabochon (smooth, pillow-like) crown or top and a faceted pavilion, lower half.  Very unusual, very eye-catching.  Same attention to detail with the arc of the robust prongs as the Pronghorns.  One word for this ring: wow.