An English superstition also held that topaz cured lunacy.
The ancient Romans believed that topaz provided protection from danger while traveling. During the Middle Ages, it was believed that attaching the topaz to the left arm protected the owner from any curse and warded off the evil eye.
It was also believed that wearing topaz increased body heat, which would enable people to relieve a cold or fever. In Europe in the Middle Ages, topaz was believed to enhance mental powers.