This is a BIG specimen of classic Thunder Bay amethyst, richly included with the hematite that gives these their distinctive mix of purple with rusty red. These crystals measure to over 4 cm across - they are really chunky! This is an old-timer, with a very old-looking collection label that labels it as "ferruginous quartz." Richard Hauck Quartz Collection specimen. OLD material, unusual in this aspect and size now.