Jade
a name applied to about 150 varieties of ornamental stones, but should be properly restricted to the mineral nephrite, so called from the Greek nephros because it was supposed by the ancients to have virtue in renal diseases.
The name is from the Spanish ijada, "the flank" (from the Latin ilia), because it was believed to cure pain in the side; and the mineral was brought by the Spanthe mineral was brought by the Spantive silicate of calcium and magnesium, tough, and of various shades of green, yellowish-gray, and greenish-white. It is principally found in China, Siberia, New Zealand, and in some of the islands JAEN has also been reported in British Columbia and Alaska.