Pendant Mercury pentagram, made of metal (tin alloy) with adjustable cord.
The Mercury pentagram is said to promote the ability to concentrate and increases the receptiveness of the brain, which is why it can be helpful in learning phases. The symbol in the inner circle is said to be due to Solomon, the Latin saying on the outer rim comes from the Middle Ages and reads: Wisdom and strength are in his house and the knowledge of all things abides from eternity to eternity.

Diameter: 31 mm