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The name nephrite is derived from the Latin lapis nephriticus, which in turn is derived from the Ancient Greek λίθος νεφριτικός (líthos nephritikós) or νεφρός λίθος (nephrós líthos), which means "kidney stone" and is the Latin and Greek version of the Spanish piedra de ijada (the origin of jade and jadeite). [3 ...
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]
Jade comes in two forms: Jadeite and Nephrite. For premium support please call: 800-290-4726 more ways to reach us
Jadeite is a pyroxene mineral with composition Na Al Si 2 O 6. It is hard ( Mohs hardness of about 6.5 to 7.0), very tough, and dense, with a specific gravity of about 3.4. It is found in a wide range of colors, but is most often found in shades of green or white.
The Māori word pounamu is derived from namu, an archaic word that describes blue-green (or 'grue') cognate with Tahitian ninamu. [2] Pounamu, also used in New Zealand English, in itself refers to two main types of green stone valued for carving: nephrite jade, classified by Māori as kawakawa, kahurangi, īnanga, and other names depending on colour; and translucent bowenite, a type of ...
However, the Middle Motagua River Valley area that yields jadeite also yields nephrite, although Mesoamerican artisans had less interest in working nephrite. [2] Colloquially 'jade' objects in Mesoamerica are composed of jadeite, but may also refer to other similar-looking, relatively hard greenstones such as albitite , omphacite , chrysoprase ...
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".
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