Magnetism
Surface colour
Density
Lustre
Crystal habit
Hardness
Streak colour
Flavour
Chemical reactions
Transmission of light
Cleavage
The colour of the mineral in powdered form
The ways a mineral tastes
The relationship between the mass of a mineral and the volume it occupies
The way the mineral breaks
This property can vary greatly within each mineral species
The reactivity of a mineral towards acids
The way minerals reflect light
The way some minerals can move a compass needle
How resistant the mineral's surface is to scratching
Some minerals show birefringence
The specific shape of the mineral crystals