Balances Male Qualities, Kundalini progression, Insight
The Shiva Lingam is one of the most sacred formations in the world. Natural Shiva lingams come only from the Narmada River in India. Other minerals / crystals, such as quartz, jasper, etc. are often polished /fabricated into the Lingam shape. In Hinduism, Shiva Lingam is the holy symbol of Lord Shiva that is considered quite sacred and worshipped with devotion by the devotees.
"The Lingams are energy generators of balance, of Soul consciousness, and healing. They are impregnated with spiritual light which resonates with the Heart Chakra; thus their particular job in healing the planet is to open the heart, healing the pain in the heart which obscures the harmony and knowingness of the soul residing within. They release dark blockages so that self-acceptance , self worth, happiness, contentment, unconditional Love, and compassion can flow."
- source www.crystalwiki.com