Turquoise is a Popular Gemstone Turquoise that has long been prized in many cultures. It's said to bring luck, peace, and protection, and it's also one of the birthstones associated with the month of December. Turquoise Man Rings is a stone for planet Jupiter which is also known as Guru or Brihaspati and it should be wear in Index finger (for Profession) which is ruled by Jupiter and Ring finger (for Personal) which is ruled by Sun.