Marble
Marble is believed to be a cleansing stone that is beneficial for the blood, skin, and cleansing systems. This mineral is said to be used to provide both clarity and states of "suspension in both meditation and tantric activities & to provide strength of self control and mastery of thought. It is thought to enhance the powers of serenity. Used very often in the fields of Naturopathy and Homeopathy as its thought to have balancing qualities.