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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]
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.
Jade Cove is located in the southern area of Big Sur on the California central coast. [1] It contains the only concentrated underwater deposit of quality nephrite jade in the world. [ 2 ] Individuals are permitted to collect as much jade as they can personally carry using hand tools up to 90 feet (27 m) deep offshore.
While jade has been since earliest times the most prized semi-precious stone for carving in East Asia and Pre-Columbian America, in Europe and the Middle East the different varieties of quartz were the most commonly used for the various types of jewelry and hardstone carving, including engraved gems and cameo gems, rock crystal vases, and ...
The Ministry of Mines now conducted the extraction and sale of jade exclusively through their auctions (emporiums). From 1964 to 1975, dollar volume of jade sales remained less than $1 million. The first time jade sales reached more than $1 million was in 1976. The amount of jade sold in dollar terms achieved $1 billion in 2010.
Jade City is a settlement in northwestern British Columbia, Canada, near the Yukon, located on Highway 37, west of Good Hope Lake and close to Cassiar, in the Cassiar Highlands. The region around Jade City is rich with serpentinite (a jade precursor), [ 1 ] greenstone (jade look-a-likes), [ 2 ] and Nephrite jade .
Antigorite is a lamellated, monoclinic mineral in the phyllosilicate serpentine subgroup with the ideal chemical formula of (Mg,Fe 2+) 3 Si 2 O 5 (OH) 4. [2] It is the high-pressure polymorph of serpentine and is commonly found in metamorphosed serpentinites.
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.