This ring is a size 8 and is made with 925 silver, sapphire and amethyst. 
Sapphire Healing Properties:
Sapphire is said to be the wisdom stone, stimulating concentration, enhancing creativity and promoting purity and depth of thought. It is believed to focus and calm the mind as well as remove unwanted thoughts, depression and mental tension.
Amethyst Healing Properties: 
Amethyst is a powerful and protective stone. It guards against psychic attack, transmuting the energy into love and protecting the wearer from all types of harm, including geopathic or electromagnetic stress and ill wishes from others. Amethyst is a natural tranquilizer, it relieves stress and strain, soothes irritability, balances mood swings, dispels anger, rage, fear and anxiety. Alleviates sadness and grief, and dissolves negativity. Amethyst activates spiritual awareness, opens intuition and enhances psychic abilities. It has strong healing and cleansing powers. Amethyst encourages sobriety, having a sobering effect on overindulgence of alcohol, drugs or other addictions. It calms and stimulates the mind, helping you become more focused, enhancing memory and improving motivation. Amethyst assists in remembering and understanding dreams. It relieves insomnia. Encourages selflessness and spiritual wisdom.