The Violet Sabrewing is one of the largest hummingbirds to be seen in Costa Rica. This species has a fairly down curved bill. Most of the male’s body is deep, glittering violet, although some parts have a bluer hue. The underside of the tail feathers is white, while the wings are brown, with green-blue feathers on the shoulder. The female is drab in coloration, with gray underparts showing green and yellow sports, and green-yellow iridescence on the back of the head.