Jupiter ( Lord Guru ) is the ruling planet for this stone Research shows that wearing a yellow sapphire stone can improve your health in a number of ways. Yellow sapphires are said to help increase concentration, promote positive thinking, alleviate stress, and protect you from psychic attacks. Additionally, wearing yellow sapphire can help you attract good luck and prosperity. Wearing a yellow sapphire stone may provide health benefits such as increased mental focus and concentration, better sleep quality, improved emotional well-being, and reduced anxiety. Additionally, wearing a yellow sapphire may help to protect against stress and anxiety-related health problems.