Actinolite is an amphibole silicate mineral with the chemical formula Ca2(Mg4.5–2.5Fe2+0.5–2.5)Si8O22(OH)2.
The hei-tiki is an ornamental pendant of the Māori of New Zealand. Hei-tiki are usually made of pounamu (greenstone), and are considered a taonga (treasure) by Māori. They are commonly called tiki by New Zealanders, a term that originally refers to the first mortal.
Jadeite is a pyroxene mineral with composition NaAlSi2O6. 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 undergoes metamorphism at high pressure but relatively low temperature.
Nephrite is a variety of the calcium, magnesium, and iron-rich amphibole minerals tremolite or actinolite (aggregates of which also make up one form of asbestos). The chemical formula for nephrite is Ca2(Mg, Fe)5Si8O22(OH)2. It is one of two different mineral species called jade. The other mineral species known as jade is jadeite, which is a variety of pyroxene. 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.
The mere is a type of short, broad-bladed weapon in the shape of an enlarged tear drop. It was used to strike/jab an opponent in the body or the head, usually made from nephrite jade. A mere is one of the traditional, hand to hand, one-handed weapons of the indigenous Māori of New Zealand, and a symbol of chieftainship.
Bowenite is a hard, compact variety of the serpentinite species antigorite (Mg3(OH)O4Si2O5). Classed as a semi-precious gemstone, it has been used for tools, weapons and jewellery by the Māori in New Zealand, and for jewellery by Fabergé. Deposits are found in several places around the world including Afghanistan, China, New Zealand, South Africa and the United States. It typically ranges in colour from dark green to light olive green, and in shades approaching yellow. Bowenite was named by James D. Dana in 1850 after George T. Bowen, who analyzed it in 1822.
Greenschists are metamorphic rocks that formed under the lowest temperatures and pressures usually produced by regional metamorphism, typically 300–450 °C (570–840 °F) and 2–10 kilobars (29,000–145,000 psi). Greenschists commonly have an abundance of green minerals such as chlorite, serpentine, and epidote, and platy minerals such as muscovite and platy serpentine. The platiness gives the rock schistosity. Other common minerals include quartz, orthoclase, talc, carbonate minerals and amphibole (actinolite).
The Sa Huỳnh culture was a culture in what is now central and southern Vietnam that flourished between 1000 BC and 200 AD. Archaeological sites from the culture have been discovered from the Mekong Delta to Quảng Bình province in central Vietnam. The Sa Huynh people were most likely the predecessors of the Cham people, an Austronesian-speaking people and the founders of the kingdom of Champa.
The use of jade in Mesoamerica for symbolic and ideological ritual was highly influenced by its rarity and value among pre-Columbian Mesoamerican cultures, such as the Olmec, the Maya, and the various groups in the Valley of Mexico. Although jade artifacts have been created and prized by many Mesoamerican peoples, the Motagua River valley in Guatemala was previously thought to be the sole source of jadeite in the region.
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" nephrite was the most highly praised and prized. Native sources in Henan and along the Yangtze were exploited since prehistoric times and have largely been exhausted; most Chinese jade today is extracted from the northwestern province of Xinjiang.
Sierra de las Minas is a mountain range in eastern Guatemala which extends 130 km west of the Lake Izabal. It is 15–30 km wide and bordered by the valleys of the Polochic River in the north and the Motagua River in the south. Its western border is marked by the Salamá River valley which separates it from the Chuacús mountain range. The highest peak is Cerro Raxón at 3,015 m. The Sierras (Chuacús) rich deposits of jade and marble have been mined for centuries. The small scale mining activities explain the name of the mountain range.
Greenstone is a common generic term for valuable, green-hued minerals and metamorphosed igneous rocks and stones which early cultures used in the fashioning of hardstone carvings such as jewelry, statuettes, ritual tools, and various other artifacts. Greenstone artifacts may be made of greenschist, chlorastrolite, serpentine, omphacite, chrysoprase, olivine, nephrite, chloromelanite among other green-hued minerals. The term also includes jade and jadeite, although these are perhaps more frequently identified by these latter terms. The greenish hue of these rocks generally derives from the presence of minerals such as chlorite, hornblende, or epidote.
Hardstone carving, in art history and archaeology, is the artistic carving of semi-precious stones, such as jade, rock crystal, agate, onyx, jasper, serpentinite, or carnelian, and for objects made in this way. Normally the objects are small, and the category overlaps with both jewellery and sculpture. Hardstone carving is sometimes referred to by the Italian term pietre dure; however, pietra dura is the common term used for stone inlay work, which causes some confusion.
The jade trade in Myanmar consists of the mining, distribution, and manufacture of jadeite—a variety of jade—in the nation of Myanmar (Burma). The jadeite deposits found in Myanmar's northern regions are the source of the highest quality jadeite in the world, noted by sources in China going as far back as the 10th century. Chinese culture places significant weight on the meaning of jade; as their influence has grown in Myanmar, so has the jade industry and the practice of exporting the precious mineral.
Philippine jade culture, or jade artifacts, made from white and green nephrite and dating as far back as 2000–1500 BC, have been discovered at a number of archaeological excavations in the Philippines since the 1930s. The artifacts have been both tools like chisels and ornaments such as lingling-o earrings, bracelets, and beads.
Waipounamu Māori are a group of Māori iwi at or around the South Island of New Zealand. It includes the iwi (tribe) of Ngāi Tahu and the historical iwi of Kāti Māmoe and Waitaha, who occupy the island except for its most northern districts. It also includes Te Tau Ihu Māori iwi, such as Ngāti Toa, Te Atiawa o Te Waka-a-Māui, Ngāti Apa ki te Rā Tō, Rangitāne, Ngāti Kuia, Ngāti Rārua, Ngāti Kōata and Ngāti Tama.
Lingling-o or ling-ling-o are a type of penannular or double-headed pendant or amulet that have been associated with various late Neolithic to late Iron Age Austronesian cultures. Most lingling-o were made in jade workshops in the Philippines, and to a lesser extent in the Sa Huỳnh culture of Vietnam, although the raw jade was mostly sourced from Taiwan.
Pounamu is a term for several types of hard and durable stone found in the South Island of New Zealand. They are highly valued in New Zealand, and carvings made from pounamu play an important role in Māori culture.
Yupei is a generic term for jade pendants. Yupei were popular even before Confucius was born. Jade culture is an important component of Chinese culture, reflecting both the material and spiritual culture. Jade is deeply ingrained in Chinese culture and played a role in every aspect of social life; it is also associated with positive qualities and aspects such as purity, excellence, and harmony.Jade is even more valued than gold in Chinese culture. The history of the art of jade carving in China to make ornaments, including dress ornaments, extends back to before 5000 BC. Ancient Chinese held even greater importance to yupei after it was regarded as a moral integrity by Confucius. Yupei could be used as belt or waist ornaments and as necklaces which appeared as early as the Liangzhu culture. Strings of jade pendant are also used to decorate headwear, such as the mianguan.
Taiwan Jade is a type of nephrite primarily composed of minerals such as tremolite and actinolite. It has a green color and is found in the Laonao Mountain area of Hualien County, Taiwan. It was first identified by Liao Hsueh-Cheng in 1956 and saw significant mining operations starting from 1965. However, its production has gradually declined since 1978 due to reduced output.
