Nephrite Nephrite can be found in a translucent white to very light yellow form which is known in China as "mutton fat" jade, in an opaque white to very light brown or gray which is known as "chicken bone" jade, as well as in a variety of green colors. Western Canada is the principal source of modern lapidary nephrite. Nephrite jade was used mostly in pre-1800 China as well as in New Zealand, the Pacific Coast and Atlantic Coasts of North America, Neolithic Europe, and southeast Asia. The name "nephrite" is derived from "lapis nephriticus", which in turn is derived from
Ornamental turning established his workshop in London and built a reputation as a maker of high-class lathes and tools. Many of his customers were among the monarchs and nobility of Europe and England became the world centre for the pastime of ornamental turning. The Holtzapffel firm continued to make lathes until 1927 by which time they had produced a total of 2557, serially numbered, many of which were equipped for ornamental turning. Other engineers copied or varied his designs but none were so prolific in their manufacture. The hobby of ornamental turning declined rapidly following the invention of the motor-car which, by