Libra Zodiac Horoscope Astrology Coin Charm Pendant Necklace in 14k Solid Yellow Gold. MG X Elements Collaboration. The symbol of the scales is based on the Scales of Justice held by Themis, the Greek personification of divine law and custom. She became the inspiration for modern depictions of Lady Justice. The ruling planet of Libra is Venus. The sun transits this sign on average between September 23 (September equinox) and October 22. Charm weight is 8 grams of solid 14k yellow gold.