Tantric Lingams are only found at the Narmada River high in the mountains of Mandhata, one of the seven sacred holy places of pilgrimage in India. Some of the Lingams have a Tantric marking symbolic of the marks on Lord Shiva's forehead. The stones are "Crypto Crystalline Quartz" and are said to contain the loftiest vibration of all stones on the Earth. They emanate a vibration that will purify your home. In India this stone with its sacred marking is used in Lord Shiva's temple as a representation of the Lord Him/Her Self. The body of the Lingam is the representation of the Male energy "Knowledge" and the markings which emerge from the Lingams of the stone is Female energy, or Wisdom.
Shapes, Colors and Sizes vary: Medium: approx 1 1/2 to 2 1/2 inches
The egg shape is said to be a phallic symbol of Shiva, the Hindu God. Shiva Lingams represent the female and male.