yes because they have same effects
Simply because colour has nothing to do with any other property of the substance in question.
False, all minerals DO NOT have the same melting point
any of a group of colors from which all other colors can be obtained by mixing.
No
This is because it belongs to the cubic group of minerals where the refractive index of light is common in all orientation. The velocity of light is the same in all directions.
sulfur
I don't think rocks can be any colour because a group of the same type of rock contain the same minerals which would make all that type of rock the same colour
Emerald belongs to the beryl mineral group, which is a type of ring silicate mineral. Other minerals in this group include aquamarine, morganite, and heliodor, all of which have different colors due to impurities.
No.
Minerals.
it all depends what you are using them for
They can see all the colors we can.