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Main jade producing countries. Jade is an umbrella term for two different types of decorative rocks used for jewelry or ornaments.Jade is often referred to by either of two different silicate mineral names: nephrite (a silicate of calcium and magnesium in the amphibole group of minerals), or jadeite (a silicate of sodium and aluminum in the pyroxene group of minerals). [1]
Oracle bone script for 玉 "jade".. The Chinese word yù 玉 "jade; gems of all kinds; (of women) beautiful; (courteous) your" has semantically broader meanings than English jade "any of various hard greenish gems used in jewelry and artistic carvings, including jadeite and nephrite; a green color of medium hue; made of jade; green like jade".
In the absence of metal tools, ancient craftsmen used tools themselves made of jade, leather strops, string saws to cut and carve jade, and reeds or other hard materials to drill holes. Working the raw stone into a finished piece was a very labor-intensive process, often requiring repeated physical movement to shape the jade. [ 12 ]
Jadeite is the principal mineral making up the most valuable form of jade, a precious stone particularly prized in China. Most gem-quality jadeite jade comes from northern Myanmar. Jade tools and implements have been found at Stone Age sites, showing that the mineral has been prized by humans since before the beginning of written history.
Most of the jade work in Costa Rica was done with a particular type. It was a deep, blue-green color, and the same type the Olmecs used. In 1998 an enormous region of this particular jade was uncovered after a hurricane in Guatemala. The area is located in south east Guatemala In the Motagua River Valley.
Yupei (Chinese: 玉佩; pinyin: Yùpèi) is a generic term for jade pendants. [1] Yupei were popular even before Confucius was born. [2]: 18 Jade culture is an important component of Chinese culture, [1] reflecting both the material and spiritual culture.