Vermilion
Vermilion (sometimes vermillion) is a color family and pigment most often used between antiquity and the 19th century from the powdered mineral cinnabar (a form of mercury sulfide). It is synonymous with red orange, which often takes a modern form, but is 11% brighter (at full brightness).

Etymology and common name
Used first in English in the 13th century, the word vermilion came from the Old French word vermeillon, which was derived from vermeil, from the Latin vermiculus – the diminutive of the Latin word vermis for worm.The name originated because it had a similar color to the natural red dye made from an insect,  Kermes vermilio, which was widely used in Europe. The first recorded use of "vermilion" as a color name in English was in 1289.The term cinnabar is used in mineralogy and crystallography for the red crystalline form of mercury sulfide HgS. Thus, the natural mineral pigment is called "cinnabar", and its synthetic form is called "vermilion" from red lead.

Chemistry and manufacture
Vermilion is a dense, opaque pigment with a clear, brilliant hue. The pigment was originally made by grinding a powder of cinnabar (mercury sulfide). Like most mercury compounds, it is toxic.Vermilion is not one specific hue; mercuric sulfides make a range of warm hues, from bright orange-red to a duller reddish-purple that resembles fresh duck liver. Differences in hue are caused by the size of the ground particles of pigment. Larger crystals produce duller and less-orange hues.
Cinnabar pigment was a side product of the mining of mercury, and mining cinnabar was difficult, expensive, and dangerous, because of the toxicity of mercury.  Greek philosopher Theophrastus of Eresus (371–286 BC) described the process in De Lapidibus, the first scientific book on minerals. Efforts began early to find a better way to make the pigment.
The Chinese were probably the first to make a synthetic vermilion as early as the fourth century BC.  Greek alchemist Zosimus of Panopolis (third–fourth century AD) wrote that such a method existed. In the early 9th century, the process was accurately described by Persian alchemist Jabir ibn Hayyan (722–804) in his book of recipes of colors, and the process began to be widely used in Europe.The process described by Jabir ibn Hayyan was fairly simple:

Mix mercury with sulfur to form aethiopes mineralis, a black compound of mercury sulfide.
Heat this in a flask (the compound vaporizes and recondenses in the top of the flask).
Break the flask.
Collect the vermilion and grind it.When first created, the material is almost black.  As it is ground, the red color appears. The longer the compound is ground, the finer the color becomes.  Italian Renaissance artist Cennino Cennini wrote: "If you were to grind it every day, even for 20 years, it would keep getting better and more perfect."In the 17th century, a new method of making the pigment was introduced, known as the Dutch method. Mercury and melted sulfur were mashed to make black mercury sulfide, then heated in a retort, producing vapors condensing as a bright, red mercury sulfide. To remove the sulfur, these crystals were treated with a strong alkali, washed, and finally ground under water to yield the commercial powder form of the pigment.  The pigment is still made today using essentially the same process.
Vermilion has one important defect; it is liable to darken, or develop a purplish-gray surface sheen. Cennino Cennini wrote, "Bear in mind ... that it is not in its character to be exposed to air, but it is more resistant on panel than on walls since, when it is used and laid on a wall, over a period of time, standing in the air, it turns black." Newer research indicates that chlorine ions and light may aid in decomposing vermilion into elemental mercury, which is black when in finely dispersed form.Vermilion was the primary red pigment used by European painters, from the Renaissance until the 20th century. Because of its cost and toxicity, though, it was almost entirely replaced by a new synthetic pigment, cadmium red, in the 20th century.
Genuine vermilion pigment today comes mostly from China; it is a synthetic mercuric sulfide, labeled on paint tubes as PR-106 (Red Pigment 106). The synthetic pigment is of higher quality than vermilion made from ground cinnabar, which has many impurities. The pigment is very toxic, and should be used with great care.

Gallery
History
The colours are widely used in the art and decoration of Ancient Rome and the Byzantine Empire, then in the illuminated manuscripts of the Middle Ages, in the paintings of the Renaissance, and in the art and lacquerware of China.

Antiquity
The first documented use of vermilion pigment, made with ground cinnabar, dates to 8000–7000 BC, and was found at the neolithic village of Çatalhöyük, in modern-day Turkey. Cinnabar was mined in Spain beginning in about 5300 BC. In China, the first documented use of cinnabar as a pigment was by the Yangshao culture (5000–4000 BC), where it was used to paint ceramics, to cover the walls and floors of rooms, and for ritual ceremonies.The principal source of cinnabar for the ancient Romans was the Almaden mine in northwest Spain, which was worked by prisoners. Since the ore of mercury was highly toxic, a term in the mines was a near-guaranteed death sentence. Pliny the Elder described the mines this way:

Nothing is more carefully guarded. It is forbidden to break up or refine the cinnabar on the spot. They send it to Rome in its natural condition, under seal, to the extent of some ten thousand librae (Roman pounds thus 3289 metric tonnes) a year. The sales price is fixed by law to keep it from becoming impossibly expensive, and the price fixed is seventy sesterces a pound.
In Rome, the precious pigment was used to paint frescoes, decorate statues, and even as a cosmetic. In Roman triumphs, the victors had their faces covered with vermilion powder, and the face of Jupiter on the Capitoline Hill was also colored vermilion. Cinnabar was used to paint the walls of some of the most luxurious villas in Pompeii, including the Villa of the Mysteries (Italian: Villa dei Misteri). Pliny reported its painters stole a large portion of the expensive pigment by frequently washing their brushes and saving the wash water.In the Byzantine Empire, the use of cinnabar/the vermilion color was reserved for the use of the imperial family and administrators; official letters and imperial decrees were written in vermilion ink, made with cinnabar.

In South Asia
It is known as sindoor. Sindoor is commonly used by married women in Hindu religion.

In the Americas
Vermilion was also used by the native peoples of America, to paint ceramics, figurines, and murals, and for the decoration of burials. It was used in the Chavin civilization (400 BC – 200 AD), and in the Maya, Sican, Moche, and Inca empires. The major source was the Huancavelica mine in the Andes mountains in central Peru.
The most dramatic example of vermilion use in the Americas was the so-called Tomb of the Red Queen, located in Temple XIII, in the ruins of the Mayan city of Palenque in Chiapas, Mexico.  The temple is dated to between 600 and 700 AD.  It was discovered in 1994 by Mexican archeologist Arnoldo Gonzales Cruz. The body and all objects in the sarcophagus were covered with bright red vermilion powder made from cinnabar.

In the Middle Ages and Renaissance
The technique for making a synthetic vermilion by combining sulfur and mercury was in use in Europe in the 9th century, but the pigment was still expensive. Since it was almost as expensive as gold leaf, it was used only in the most important decoration of illuminated manuscripts, while the less expensive minium, made with red lead, was used for the red letters and symbols in the text.
Vermilion was also used by painters in the Renaissance as a very vivid and bright red, though it did have the weakness of sometimes turning dark with time.  Florentine artist Cennino Cennini described it in his handbook for artists:

This pigment is made by alchemy, prepared in a retort, which subject I will leave be since to put every method and recipe into my discussion would be too longwinded. The reason? Because if you care to take the trouble, you will find a lot of recipes for it, and particularly if you cultivate friendships with monks. But, so that you do not waste your time with the many different techniques, I advise you, just take what you can find at the apothecary's for your money. And I want to teach you how to buy it and how to recognise the good vermilion. Always buy solid vermilion and not crushed or ground. The reason? Because more often than not you are cheated either with red lead or crushed brick.
By the 20th century, the cost and toxicity of vermilion led to its gradually being replaced by synthetic pigments, particularly cadmium red, which had a comparable color and opacity.

Chinese red
In China, the color vermilion was also playing an important role in national culture. The color was mostly used in creating Chinese lacquerware, which was exported around the world, giving rise to the term "Chinese red".
The lacquer came from the Chinese lacquer tree, or Toxicodendron vernicifluum, a relative of the sumac tree, which grew in regions of China, Korea, and Japan. The sap or resin of the tree, called urushiol, was caustic and toxic (it contained the same chemical compound as poison ivy), but painted onto wood or metal, it hardened into a fine natural plastic, or lacquer surface. The pure sap was dark brown, but beginning in about the third century BC, during the Han dynasty, Chinese artisans colored it with powdered cinnabar or with red ochre (ferric oxide), giving it an orange-red color.  Beginning in about the 8th century,  Chinese chemists began making synthetic vermilion from mercury and sulfur, which reduced the price of the pigment and allowed the production of Chinese lacquerware on a larger scale.
The shade of red of the lacquerware has changed over the centuries. During the Eastern Han dynasty (25–220 AD) the Chinese word for red referred to a light red. However, during the Tang dynasty (618–907), when the synthetic vermilion was introduced, that color became darker and richer. The poet Bai Juyi (772–846) wrote in a song poem praising Jiangnan, "the flowers by the river when the sun rises are redder than flames", and the word he used for red was the word for vermilion, or Chinese red.When Chinese lacquerware and the ground cinnabar used to color it were exported to Europe in the 17th and 18th centuries, European collectors considered it to be finer than the European vermilion. In 1835, "Chinese vermilion" was described as a cinnabar so pure that it only had to be ground into powder to become a perfect vermilion. Historically, European vermilion often included adulterants including brick, orpiment, iron oxide, Persian red, iodine scarlet—and minium (red lead), an inexpensive and bright, but fugitive lead-oxide pigment.Since ancient times, vermilion was regarded as the color of blood,  thus the color of life. It was used to paint temples and the carriages of the emperor, and as the printing paste for personal seals. It was also used for unique red calligraphic ink reserved for emperors. Chinese Taoists associated vermilion with eternity.

In nature
Vermilion flycatcher
Vermilion cardinal
Vermilion tanager

In art and culture
Hindu culture
Hindu women use vermilion along the hair parting line known as sindoor, to signify that they are married. Hindu men and women often wear vermilion on their foreheads during religious ceremonies and festivals.

Religion
The Shaolin temple, where Buddhist monk Bodhidharma is reputed to have established the new sect of Chan Buddhism (Zen Buddhism), is colored a bright tone of vermilion. This temple was featured in the West by the 1972–1975 TV series Kung Fu.
In the Bible, vermilion is listed as a pigment that was in use for painting buildings during the reign of Shallum the son of Josiah king of Judah, and is named in the book of the prophet Ezekiel as a pigment used in art that portrayed Chaldean men. (Jeremiah 22:11–14, Ezekiel 23:14–17)
The vermilion rose is a symbol of the Blessed Virgin Mary.
In Shinto, torii gates which mark the entrances to sacred spaces, as well as the columns and eaves of shrines, are traditionally painted vermilion to ward off evil.

Mythology
In Han China's Five Elements cosmology (cf. Chinese mythology), one of the four symbols of the four directions is a bird called Vermilion Bird, which represents the direction of south. The color red (particularly as exemplified by cinnabar/vermilion) was also symbolically associated with summer, fire, a certain note on the musical scale, a certain day of the calendar, etc.

Literature
Vermilion Sands is a collection of science-fiction short stories by J. G. Ballard published in 1971 about an imaginary future resort that pleases its guests by using various kinds of futuristic technology.
Manfred, a short dramatic poem by Lord Byron: "...With the azure and vermillion / which is mixed for my pavillion"

History of computing
Vermilion City is one of the locations used in the English-translated versions of the Pokémon video games and anime. It is a port town in the Kanto area, and the name is derived from the original Japanese name クチバシティ (Kuchiba City). Kuchiba is an orange-red color associated with sunsets and autumnal leaves and "Vermilion" was used as an approximate translation.

Variations
Red-orange
The Crayola color red-orange has been a Crayola color since 1930.

Orange-red
The web color orange-red was formulated in 1987 as one of the X11 colors, which became known as the X11 web colors after the invention of the World Wide Web in 1991.

Medium vermilion
This color is the medium tone of vermilion called vermilion on the Plochere color list, which was formulated in 1948 and is used widely by interior designers.

Chinese red
Chinese red or China red is the name used for the vermilion shade used in Chinese lacquerware. The shade of the color can vary from dark to light depending upon how the pigment is made and how the lacquer was applied. Chinese red was originally made from the powdered mineral cinnabar, but beginning in about the 8th century it was made more commonly by a chemical process combining mercury and sulfur. Vermilion has significance in Taoist culture, and is regarded as the color of life and eternity.
"Chinese red" appears in English in 1924.

See also
Red
Scarlet (color)
Persian red ("artificial vermilion")
List of colors
Red pigments
List of inorganic pigments
Kumkuma

Notes
References
Citations
Further reading
External links
National Pollutant Inventory: Mercury and compounds fact sheet
"Vermilion". Pigments through the Ages. WebExhibits.
"Why are cinnabar, vermilion, and cadmium orange colored?". Causes of Color. WebExhibits.
More information in Medical Dictionary
Vermilion, Colourlex
"Vermilion" . New International Encyclopedia. 1905.