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2. Jade - Wikipedia

   en.wikipedia.org/wiki/Jade

   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]

3. Jadeite - Wikipedia

   en.wikipedia.org/wiki/Jadeite

   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 .

4. List of U.S. state minerals, rocks, stones and gemstones

   en.wikipedia.org/wiki/List_of_U.S._state...

   A 2010 effort led by State Senator Gloria J. Romero, a Democrat from Los Angeles, sought to remove serpentine from its perch as the state's official stone. Organizations such as the Asbestos Disease Awareness Organization have supported the move as the olive green rock is a source of chrysotile , a form of asbestos that can cause mesothelioma ...

5. Jade trade in Myanmar - Wikipedia

   en.wikipedia.org/wiki/Jade_trade_in_Myanmar

   Jade has been associated with China going as far back as the Liangzhu culture (3400-2250 BC) but this jade was primarily nephrite, a milky white stone more common than the green Burmese jadeite. Often the stone was used in the presence of copper in order to give the illusion of a deeper green color without access to jadeite.

6. Nephrite - Wikipedia

   en.wikipedia.org/wiki/Nephrite

   Nephrite jade is an ornamental stone used in carvings, beads, or cabochon cut gemstones. Nephrite is also the official state mineral of Wyoming . Nephrite can be found in a translucent white to very light yellow form which is known in China as mutton fat jade, [ 1 ] in an opaque white to very light brown or gray which is known as chicken bone ...

7. Chinese jade - Wikipedia

   en.wikipedia.org/wiki/Chinese_jade

   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".