Amethyst is not primarily defined by carat weight; this is different to most gemstones where the carat weight exponentially increases the value of the stone. The biggest factor in the value of amethyst is the color displayed. The highest grade amethyst (called "Deep Russian") is exceptionally rare and therefore, when one is found, its value is dependent on the demand of collectors. It is, however, still orders of magnitude lower than the highest grade sapphires or rubies (padparadscha sapphire or "pigeon's blood" ruby). Amethyst Amethyst is a violet variety of quartz. The name comes from the Koine Greek ἀμέθυστος "amethystos" from
Amethyst, Princess of Gemworld Mordiel, who has usurped control of their house. Amethyst later joins the Justice League Dark upon being brought to Earth in an effort to reconnect Tim Hunter with magic. Amethyst remains on the team in order to recover the portal stone that John Constantine has stolen. She is told not to trust any promises Constantine has made. Soon after, she has an adventure while exploring the House of Mystery with her allies Black Orchid and Frankenstein. They destroy several malicious threats that try to devour them. During the "Trinity War" storyline, Amethyst is among the superheroes that feel the disturbance