Eyes+Horn+Hooves are the same color
Mohs Scale isn't applied
precious gemstone examples:

Horn

horn is made of precious gemstone
horn buds in toddlers and stop growing into adulthood.

all genders grow horns
shape, size, and color are hereditary
most common shapes:

broken horns CAN grow back if mended quickly with Magic

Ears

vary from medium-long

Fur Coverage

3 colors max
any color
Texture, Pattern, and Length is hereditary

Tails

medium to long
General shapes.

tail fur tends to match haircolor or horn+eye+hooves

Hooves

cloven or flat
always match horn and eye color precious gemstones