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