Jade stone is a popular one that’s sometimes referred to as the stone of luck and happiness. “The use of jade goes back a long way and has its roots in ancient Eastern civilizations,” says crystal healer Carol Boote. “China is where jade is truly revered and celebrated. It can be found etched into all kinds of jewelry and statues.” Jade also saw popularity outside Eastern cultures. “The remains of jade tools and utensils have been found in the excavation of ancient sites worldwide,” Boote says. “Tribes in New Zealand would use jade to adorn their masks. They would also turn to the mystical powers of jade when they wanted to make an offering to the water spirits.”
Occurrence and Mining
The term jade, as used in geology and gemology, refers to two extremely tough, essentially monomineralic rocks used for carvings and gems. Amphibole jade is nephrite, a tremolite-actinolite [Ca2(Mg,Fe)5Si8O22(OH)2] rock with a felted, microcrystalline habit, and pyroxene jade is jadeite [NaAlSi2O6] rock (jadeitite) which varies from micro- to macrocrystalline textures. Both rock types have received relatively little attention due to their scarcity, minor economic importance, and cryptic petrography. The geological interpretation of both jade types has been hindered by poor exposure and the occurrence of major jadeitite deposits in politically unstable countries. However, recent investigations show not only that the jades share some common geological characteristics, but both result from and record important Earth processes. Nephrite is the more common and less valuable of the two jade types. Important deposits occur at the Polar, Kutcho, and Ogden Mtn. properties in northern British Columbia, Canada (Gabrielse, 1990); along the Yurungkash and Karakash (White Jade and Black Jade) Rivers, Kunlun Mtns., Xinjiang, China (see Webster, 1975); SW of Lake Baikal in the East Sayan Mtns., Siberia, Russia (Prokhor, 1991); the Barguzin-Vitim Massif, Central Vitim Highland (East of Lake Baikal), Siberia, Russia (Sekerin et al., 1997); near Cowell, South Australia (Flint and Dubowski, 1990); the Westland (Arahura River– Cooper, 1995), the Livingstone, Nelson, Otago, and South Westland fields on South Island, New Zealand (Beck, 1984 & 1991); northeastern Taiwan (Wand,. 1987); Jordansmuhl, Poland (Visser, 1946); in the Granite Mtns., Lander Co., Wyoming (Madson, 1978); and along the Noatak & Kobuk Rivers south of the Brooks Range in Alaska (Loney and Himmelberg, 1985).
Virtually all colors, mostly green
Intergrown grainy or fine fibrous aggregate
2.9 – 3.38
1.600 – 1.688