There are several bands called Amethyst.
These are photos from concerts where Amethyst played, so they may be of other bands that played the concert as well.
World War Me / Calloway Circus / Luxora / Never Better / Phantom House / Amethyst Oct 18, 2019 Sauget, Illinois, United States Uploaded by Austin Mcclain
Bloodstock Open Air 2015 Aug 6 - 9, 2015 Walton-on-Trent, UK Uploaded by Gwyn Williams
Breed 77 / Amethyst / Last Shop China Town Sep 12, 2006 Portsmouth, England, United Kingdom Uploaded by Dan Delaney