Bone White

Bone White is one of the earliest warm white pigments used in the Western painting tradition, made by calcining animal bones at high temperature and then pulverizing them. The main chemical components of Bone White are calcium phosphate and calcium carbonate. Its particulate structure diffuses light in a warm way, presenting a unique white tone with a subtle pinkish-yellow or creamy hue.

By the time of Ancient Greece and Rome, Bone White was already widely used. Frescoes in the ruins of Pompeii have tested for Bone White content. Roman painters used it for the skin of female figures, using its warmth to allow the life-like blood warmth to show through marble-like whiteness. Bone White was also added to encaustic painting to increase the pigment's opacity and texture.

In medieval illuminated manuscripts, monastic painters preferred using Bone White when depicting the skin of saints and the light of heaven. Unlike the cool white of chalk, Bone White's warm luster appeared both holier and more intimate on parchment. During the same period, Bone White was also an important white pigment in fresco painting, especially widely used in the Italian school.

Renaissance masters were particularly fond of Bone White. Leonardo da Vinci used Bone White in the under-layers of the Mona Lisa's skin tones, creating that elusive warm, gentle glow. Botticelli used large amounts of Bone White in 'The Birth of Venus', making the skin of the goddess and spring nymphs seem to emit a subtle light. This warm white became the standard white of the Renaissance ideal of beauty.

After the 17th century, with the popularization of lead white and zinc white, the use of Bone White gradually declined, but it never disappeared in the restoration of old paintings and specific techniques. In modern pigment chemistry, the color name Bone White has been retained as a standard. In the design world, it represents a classical white with life-like warmth, a gentle alternative to cold pure white.