a rock is hard and a gemstone is shinning and has manychemical
a gem, a gem stone and a sparkly rock. (?)
You are such a gem! The gem fell onto the floor.
A gem is considered any attractive mineral or rock which when cut and polished, may be used for ornamentation. A gem can be either a mineral or a rock, but most gems are minerals. A rock is an aggregate of many minerals, with no specific structure, while a mineral has a much more ordered atomic structure, with specific physical and chemical properties. A gem is not necessarily a crystal; lapis lazuli is not a mineral or a crystal, yet can still be considered a gem due to its desirable color and traits when polished.
It has no official rock, stone, gem or mineral.
A rock is a rock, and a diamond is a gem.
A valuable rock is a gem.
North Dakota does not have a state rock nor mineral nor gem.
If you mean state rock, Colorado's state rock is yule marble
a type of rock or gem
gem stone
no a diamond is a gem.
It has no official state rock, stone, gem or mineral.