Kaltura Share to Google Classroom Naturalist Rudy Mancke showcases a piece of South Carolina's state mineral - Amethyst. Amethyst is primarily found in South Carolina's piedmont region. Grades: 3 4 5 6 7 8 9 10 11 12 Subjects: Science Collection: ETV StreamlineSCAbout KnowItAllAudio DescriptionsRudy Mancke Collection Series: Short Takes with Naturalist Rudy Mancke