If the mineral has a _metallic_ or _submetallic_ luster,
and is: Consult Mineral Chart
white 1
gray 2
yellow 3
brown 4
black 5
If the mineral has a _nonmetallic_ luster,
and is: Consult Mineral Chart
white 6
gray 7
yellow 8
brown 9
black 10
green 11
blue 12
red or pink 13
purple or 14
violet
colorless 15