Emerald and Ruby rings Emerald is a heart chakra stone. -provides emotional balance and stability Ruby is for root chakra -Ruby is known as the "King of Gemstones". As per astrology Gemstone ruby is associated with Sun and this planet is famous for enhancing vitality, strength, and leadership. In crystal healing,the ruby is used to alleviate body pain and help with blood and circulatory problems, low energy, heart problems, and detoxification.