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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]
Taiwan Jade, also known as Fengtian Jade, Taiwan Nephrite, or Taiwan Green Jade, or Taiwan Soft Jade, reached peak production during the 1960s and 1970s. During this time, Taiwan became the world's leading exporter of processed nephrite. Therefore, the green nephrite produced in Taiwan gained worldwide renown under the name "Taiwan Jade."
Jade comes in two forms: Jadeite and Nephrite.
While nephrite jade possesses mainly grays and greens (and occasionally yellows, browns, black or whites), jadeite jade, which is rarer, can also contain blacks, reds, pinks and violets. Nephrite jade is an ornamental stone used in carvings, beads, or cabochon cut gemstones. Nephrite is also the official state mineral of Wyoming.
One is nephrite, one of the two types of jade (the other being jadeite, a variety of pyroxene). [5] Another gem variety is the chatoyant form known as cat's-eye actinolite. This stone is translucent to opaque, and green to yellowish green color. This variety has had the misnomer jade cat's-eye. Transparent actinolite is rare and is faceted for ...
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".
Jadeite jade is the most valuable form, [8] with the highest-quality material commanding prices well in excess of $200 per carat as of 1994. [21] Jadeite jade first came into significant use in China only towards the end of the 18th century, as fei tsui. [22]
However, in 2010 Dr. Fang Jiann-Neng from the National Taiwan Museum conducted mineralogical research, and suggested naming this gem-grade serpentine jade as “Taiwan Black Jade” in an article published in 2011. This distinction was made to differentiate it from other black jades that are commonly referred to as “Black Jade,” based on ...