Harness The Power Of The Moon With one hand polished moon-shaped crystal delicately placed in a stunning gold-plated 925 sterling silver setting. Each stone is 9x13mm in size ensuring it will always catch your eye. Size: 5 (15.6mm Diameter) Ring material: Gold Plated 925 Sterling Silver AMETHYST Qualities: This is a very powerful and very protective stone. The stone guards against physical attack changing the energy into love. Amethyst is also a natural tranquilizer, blocking geopathic stress and negative environmental energies. The stone also can assist in overcoming addictions and blockages of all kinds. Amethyst is excellent for the mind and greatly aids in the decision-making process. While also balancing out the highs and lows allowing you to reach a true balance.