What is Minerals?
What is your birthstone?
Your birthstone is either a particular mineral or a distint varity of a partcular mineral.
How is either your birth stone classified ?
What is chemical formula?
What is its color?
What is its luster?
What is its hardness?
What is its cleavage?
What is its steak?
What properties make this stone unusally interesting or disirable?
With what other minerals does your birth stone mineral commonly occure?