In the Hindu trinity, Shiva is a powerful god in the cycle of destruction and creation. The great lord was using his cosmic energy to end all existence and make it arise once more. This image of Shiva in his Jnana Dakshinamurti form is depicting the god as the supreme teacher. Jnana means 'wisdom' or 'knowledge' and dakshina means 'grace'. Only through Shiva's infinite wisdom and grace one can attain supreme knowledge and be redeemed from the bondage of the phenomenal world. The god's right leg is resting on the 'child-like' dwarf apasmara purusha, who symbolizes ignorance and plays with a snake in his right hand. Similar images of Shiva were generally enshrined on the southern walls of a temple.
The Shiva-Linga, in which the cosmic powers of Shiva and Uma are symbolized in a radiant union, Shiva's vehicle, the Nandi bull, and his other mystical powers have influenced thousands of years of Indian art, thought, and faith.

  Shiva, in the fullest sense, is a god of the common people, although at first excluded by the Aryans. Representations of a god appearing identical to Shiva have been discovered in the cities of the Indus Valley, especially those of stamp seals, where he is shown three-faced and seated in the lotus position of meditation, surrounded by animals, and wearing what appears to be a headdress of horns. In these small representations he appears to be lean and ascetic, his body marked by painted stripes, and his arms extended over his knees. In other representations Shiva is fair, with four faces and three eyes. The third eye, situated in the middle of his forehead, has a fiery glance from which all created things shrink. Three horizontal lines sometimes represent Shiva's third eye, a mark worn by devotees.
The Lord's attributes represent his victory over the demonic activity, and calmness of human nature. He is known as the "giver" god. His vehicle is a bull (symbol of happiness and strength) named Nandi.

  In Tantra, the shape embodies masculine energy, dynamic expression and knowledge.  The markings named Yoni (sacred sanskrit word for vulva), depicts the feminine energy, wisdom and intuition.  Together, the female energy arouses the masculine urge to create.  As such, the Tantric Lingham unifies the dualistic (male female) world into harmonious balance. 
The ancient practice of Feng Shui uses the sacred Shiva Lingham Stone to direct the energy flow throughout one's home.  Place a Shiva Lingham in the Relationships/Marriage area of your home to increase fertility and to bring you closer to your partner. 
The Shiva Lingham Stone is physical body stone.  Nurtures second chakra.  A great stone for those who did not receive proper nurturing in childhood.  Use Chrysoprase with the Shiva Lingham stone to add courage to see the early experience and how it effects your life.  Place the Chrysoprase between the first and second chakras in a healing session.