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Vermilion

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Vermilion is a dense, opaque pigment known for its brilliant, warm hue. It is often described as a red-orange color that is 11% brighter than modern equivalents.

Tizian 041
Tizian 041

Historically, this pigment was made from the powdered mineral cinnabar, which is a form of mercury sulfide. Because it contains mercury, vermilion is highly toxic to living things. Despite these dangers, it has been a vital tool for artists and decorators for thousands of years. It has appeared in everything from Roman frescoes to Chinese lacquerware and religious ceremonies in India.

Red tikka powder
Red tikka powder

The appearance of vermilion depends heavily on how it is processed. The pigment is not just one single shade; mercuric sulfides can produce a range of colors. These range from a bright orange-red to a duller, reddish-purple that looks like fresh liver. The specific hue is determined by the size of the ground particles. Larger crystals produce duller, less orange colors. To achieve a more perfect and finer color, the pigment must be ground extensively. The Italian Renaissance artist Cennino Cennini once suggested that grinding it every day for 20 years would make it better.

There are two main ways to produce this pigment: through mining or through chemical synthesis. Originally, people simply ground up natural cinnabar. However, mining this mineral was difficult, expensive, and dangerous due to its toxicity. To solve this, chemists developed ways to create synthetic vermilion. In the 9th century, the Persian alchemist Jabir ibn Hayyan described a process involving mercury and sulfur. He explained how to mix these elements to form a black compound called aethiopes mineralis. This compound is then heated in a flask until it vaporizes and recondenses into a red solid.

Lacquerware-roundbox-w-children
Lacquerware-roundbox-w-children

By the 17th century, a more advanced technique called the Dutch method was introduced. This process involved mashing mercury with melted sulfur to create black mercury sulfide. This mixture was then heated in a device called a retort. The resulting vapors would condense into bright, red crystals of mercury sulfide. To make the pigment commercially useful, these crystals were treated with a strong alkali to remove excess sulfur. They were then washed and ground under water to create a fine powder. This fundamental process is essentially the same one used to manufacture the pigment today.

Vermilion has a long and varied history across many global cultures. The first documented use of ground cinnabar dates back to 8000–7000 BC at the Neolithic village of Çatalhöyük in modern-day Turkey. In Ancient Rome, the Almaden mine in Spain was a primary source, though working there was often a death sentence due to the toxic ore. The Romans used the pigment for frescoes, statues, and even cosmetics. In the Byzantine Empire, the color was a symbol of status. Imperial families used vermilion ink to write official decrees and letters.

In the Americas, various civilizations used vermilion for ritual and decorative purposes. The Chavin, Maya, Sican, Moche, and Inca empires all utilized the pigment. A famous discovery was made in 1994 by archaeologist Fanny López Jiménez at the Mayan ruins of Palenque. She found the Tomb of the Red Queen, where the body and objects were covered in bright red cinnabar powder.

Lacquerware-roundbox-w-children
Lacquerware-roundbox-w-children

Meanwhile, in China, vermilion was essential for creating famous lacquerware. Artisans mixed powdered cinnabar with the toxic sap of the lacquer tree to create a durable, orange-red surface. This helped establish the global reputation of "Chinese red."

Despite its beauty, vermilion has a notable chemical weakness. It is liable to darken over time, often developing a purplish-gray sheen on its surface. This happens when the pigment is exposed to air. Cennino Cennini noted that it is more resistant when used on wooden panels than when applied to walls. Recent research suggests that light and chlorine ions may help decompose the vermilion into elemental mercury, which appears black when finely dispersed. This instability is one reason why many artists eventually moved away from the material.

In the 20th century, the high cost and toxicity of vermilion led to its replacement. Most European painters switched to a synthetic pigment called cadmium red. While cadmium can also be toxic, it provides a similar color and opacity. Today, genuine vermilion is still produced, mostly in China, and is labeled as PR-106 on paint tubes. This synthetic version is actually of higher quality than the old method of grinding raw cinnabar because it contains fewer impurities. It remains a significant part of the history of color and art.

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File:Tizian 041.jpg
Tizian 041.jpg
File:Lacquerware-roundbox-w-children.jpg
Lacquerware-roundbox-w-children.jpg
File:Scarlet Flycatcher (Pyrocephalus rubinus) male, Pantanal, Brazil 2.jpg
Scarlet Flycatcher (Pyrocephalus rubinus)...
File:Red tikka powder.jpg
Red tikka powder.jpg
File:181029 Chū-kondō of Kōfuku-ji.jpg
181029 Chū-kondō of Kōfuku-ji.jpg
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Fushimi Inari Romon.jpg
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