PS4 Gungrave G.O.R.E. introduces Cheni Quartz Angel Or Quartz for short. Iggymob has introduced Gungrave G.O.R.E character Cheni Quartz Angel, or Quartz for short. According to Iggymob, Quartz forms an organization with Mika Asagi to eradicate SEED. Her left arm is already infected by SEED. Gungrave G.O.R.E is due out for PlayStation 4 in December.