Appearance: Opaque, often inclusions/bands.
Colour: green, blue.
Properties: Tranquil; sustains. Aids meditation. Assists speaking truth, personal confidence, sensitivity. Calms, reenergises chakras. Overcomes phobias. Self-worth, self-acceptance. Aids keeping silent when appropriate. Treats arthritis, muscle spasms, digestive tract. Regulates blood-sugar/insulin balance. Treats PMS, menstrual cramps. Dissolves miasmas.
Position: Place where appropriate.
Photo and size are a sample.
Disclosure: If you're worried about your health always see your doctor first. There are no guarantees with crystals, but they may enhance your life.