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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. Jadeite is formed only in the subduction zones of continental margins, where rock ...
Collecting jade in the White Jade River near Khotan. Chinese jade refers to the jade mined or carved in China from the Neolithic onward. It is the primary hardstone of Chinese sculpture. Although deep and bright green jadeite is better known in Europe, for most of China's history, jade has come in a variety of colors and white "mutton-fat ...
kosmochlor, chromium-enriched jadeite, albite feldspar. Maw sit sit, also known as jade-albite, is a gemstone found exclusively in northern Burma. It was first identified in 1963 by the late Swiss gemologist Edward Gubelin and was named after the village close to where it was first found in the foothills of the Himalayas. [1]
Omphacite is a member of the clinopyroxene group of silicate minerals with formula: (Ca, Na) (Mg, Fe 2+, Al) Si 2 O 6. It is a variably deep to pale green or nearly colorless variety of clinopyroxene. It normally appears in eclogite, which is the high-pressure metamorphic rock of basalt. Omphacite is the solid solution of Fe-bearing diopside ...
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, and quartzite. [3] Variation in color is largely due to variation in trace element composition. In other words, the types of trace elements and their quantities ...
Jade. 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 ...
The Māori word pounamu, also used in New Zealand English, 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 serpentine, known as tangiwai. The collective term pounamu is preferred, as the other ...
Uranium glass is glass which has had uranium, usually in oxide diuranate form, added to a glass mix before melting for colouration. The proportion usually varies from trace levels to about 2% uranium by weight, although some 20th-century pieces were made with up to 25% uranium. [1][2] First identified in 1789 by German chemist Martin Heinrich ...
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