Cassiterite is basically a tin oxide, with crystals forming short prismatic twins. The stone rates 6 to 7 on the Mohs’ hardness scale, and occurs in brown, green-yellow, black, and red. “Cassiterite” derives from the Greek word “kassiteros” which simply means tin. The metal itself has been produced as far back as the 4th century B.C., and even back then, smelting was considered as much art as science.
Cassiterite is claimed to be able to help the wearer to eliminate negative thoughts, such as those of prejudice and separation. It helps a person cope with rejection and disapproval, urging them to be optimistic in the face of emotional adversity. Overall, this stone protects the wearer against negativity by grounding them emotionally and spiritually, reflecting the negativity back to the person it originated from.