Silicon - 10 pounds*Locality: Germany Lab Grown *Requires 2lbs of shipping space per pound Color: Silicon in its pure form is typically dark gray. However, when combined with other elements, it can exhibit different colors depending on the compound it forms. Hardness: Silicon has a Mohs hardness of 7. This means it is relatively hard and can scratch glass and softer materials. However, it is not as hard as some other minerals like diamond or corundum. Clarity: In its