Sulphur ( sulfur )
is a chemical element of the periodic table with formula S and hardness of 1.5-2.5.
Is a very brittle material very sensitive to the heat: it can brake just holding on the fingers, therefore cutting and polish is a challenge and of course the result is not as you can expect from a gem...
the luster is dull and greasy with small cavities ; however is an extreme stone to be collected and rarely facetted. It comes from Vodinoskoye,Samara Oblast,Russia.