There are 2 crystals commonly know as Jade : Jadeite from the Spanish phrase 'piedra de ijada' meaning 'loin stone' which is commonly used by South American people for treating kidney disorders, and Nephrite from the Greek 'nephros' meaning 'kidney', due to the belief that it helped with renal disorders. Both types of Jade are sometimes called 'kidney stone' because of their ancient usage.
A piece of Jade carried in your trouser or skirt pocket, close to your kidneys will provide a continuous effect and help ease problems.
Jade is also known for attracting wealth and prosperity. Placing Jade on your desk in your place of work will also promote calm and harmony.
Jade has been used by the Chinese for many years in the creation of love tokens, and has been known as the 'concentrated essence of love'.
When you are expecting your lover over for a visit take your piece of Jade and strike it very lightly with a small piece of metal (i.e. a teaspoon) twice. The sound the Jade makes establishes harmony which will help to create a balance in all of your relationships.