Brisingamen

Brisingamen is said to be the necklace of the godess Freya of the Norse Mythology. When she wore it no man or god could withstand her charms. Obviously a matter of great concern to the other godesses during springtime when she reputedly wore it.

It was forged by four dwarves and, in order to obtain it, she was obliged to spend a night with each of them in turn.