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Gemstone Crystal System Density Hardness Refractive index Treatments
monoclinic 2.90-3.02 6.6 1.60-1.63 none

Carved nephrite urn

Shades of greyed green, yellow, white and black

Excellent: one of the toughest gems

Canada, United States, Mexico, and Australia
Deposits in Rhotan, Yarkland in the Mountainous
Western China
The Jordensmishl Nephrite Jade Deposit in Poland
(Discovered by Herman Traube 1885)
Nephrite Deposits between Sestri Levante and Montererosso in the Appenine Mountains in Italy
(Discovered by Kalkowsky in 1906)
Liguria Deposits in India
Several Deposits in Switzerland
(i.e. Salux, Val de Faller, Poschiaro, the Gottard Range, the Honduas Area)
Click Here for a complete List

This gemstone is often confused with:

Maw Sit Sit
Aventurine Quartz
Green Jasper or Bloodstone
Massive Green Grossular Garnet


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Nephrite Jade

calcium magnesium, iron silicate.

Nephrite is a very tough mineral and was originally used in primitive times to fashion tools such as axes, knives and clubs. The mineral is abundant worldwide, being a metamorphic alteration product of serpentinites. The Chinese have prized the nephrite variety of jade more than any other gemstone. For over 3000 years, they carved flat discs with a central hole, termed pi, from nephrite to worship heaven. Jade was equally important after death, with pieces placed in the deceased's mouth to serve as a heart in the afterlife. Two minerals are both considered to be jade, nephrite and jadeite. The latter was not discovered until the mid 1800s in Burma.