A very sacred stone often found near rivers in India.  
Shivalingham helps initiate and establish new beginnings and fertility either sexually or figuratively with birthing new creative projects and new beginnings in other areas of your life. Great for realigning chakras and bringing balance to the body physically emotionally and spiritually,
 
The word shiva means sign or symbol, and the word lingham means cosmic egg (hence the shape) representing Brahmanas which is the creation of Both female and male energies. Thus Shivalingham is excellent for uniting the power of feminine and masculine energy within you and helps to ignite love and passion in your life while also adding a revitalised and renewed energy in general. 
 
Shivalingham is a popular choice for water features and is often used representing reemerging from the past and being brought into a new beginning, like how water washes off dirt debris and cleanses. 
 
Very grounding and help connect to Mother Earth, while increasing confidence and balance mentally and emotionally. Some believe the symmetrically rounded ends of Shiva Lingham emit energy stabilisation helping to increase memory function and expanding overall consciousness.