Shiva Lingam is a sacred stone. SL will intensify the vitality and level of pranic energy within your body. The stone as a whole recognizes that they are one, yet they are each a separate entity within the one. Its vibration has a different action depending on where you place it.
This stone holds within it the feeling of unity and duality. On one hand you see the masculine part of the stone within its phallic shape, and the feminine in the beauty of the markings on the stones.