Matching Pairs Minerals VocabularyOnline version Mineral vocabulary words by Tabitha Najera 1 Minerals 2 hardness 3 color 4 adamantine 5 dull 6 vitreous 7 pearly 8 streak 9 metallic 10 silky 11 luster 12 Fredrich Mohs a naturally formed, inorganic solid with a crystal structure Most obvious! Least dependable pearl like shiny, smooth The color left behind when you scratch the mineral on a hard surface how well a mineral resists being scratched poor reflectors, rough smooth ( baby powder) reflects light looks like metal diamond like (high Shine) glassy (70% minerals) created the hardness scale in 1822