The difference is minor, but the important property of all Jade is its toughness. Toughness in this context is the opposite of brittleness, and is a quite different property to hardness, which is simply resistance of a material to scratching. Diamonds are hard, Jade is tough.
Siberian Jade is primarily found in the Sayan Mountains near Lake Baikal, with some material occurring along the Onot River, south of nearby Irkutsk. The mining of Siberian green Nephrite Jade is extremely challenging due to a combination of harsh weather conditions and extremely rugged local terrain.
The Siberian Jade is quite popular due to its pretty pale green color and its transparency.
Nephrite Jade is has been very important to the Chinese culture for over 5000 years. In China, Jade symbolizes a connection between the living and the dead as well as power, wealth, and social class.
Metaphysical Properties of Nephrite Jade:
Nephrite Jade is a stone of the heart. It is said to have a beneficial effect on all heart related issues, and all love relationships. It is also considered to be good for emotional balance and stability.