Amethyst and it can not be differentiated with absolute certainty without advanced gemmological testing (which is often cost-prohibitive). There is one test based on "Brazil law twinning" (a form of quartz twinning where right and left hand quartz structures are combined in a single crystal) which can be used to identify synthetic amethyst rather easily. It is possible to synthesize twinned amethyst, but this type is not available in large quantities in the market. Single-crystal quartz is very desirable in the industry, particularly for keeping the regular vibrations necessary for quartz movements in watches and clocks, which is where a lot
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