metallic
color
streak
pearly
Fredrich Mohs
adamantine
hardness
silky
luster
Minerals
vitreous
dull
smooth ( baby powder)
The color left behind when you scratch the mineral on a hard surface
reflects light
how well a mineral resists being scratched
poor reflectors, rough
diamond like (high Shine)
glassy (70% minerals)
Most obvious! Least dependable
looks like metal
pearl like shiny, smooth
a naturally formed, inorganic solid with a crystal structure
created the hardness scale in 1822
