From Natural Stone to Color on Canvas

An appreciation of thangka painting can begin with its colors.

Deep blues, layered greens, and warm reds reflect more than the artist’s palette. They also reveal something about the materials behind the painting and the ways those materials are prepared. In traditional thangka painting, natural minerals are an important source of color. Selected, ground, and mixed, they pass through the artist’s hands to become part of an intricate work of art.

01 | Color Begins in Stone

Blue | Azurite

Azurite is an important source of blue in traditional thangka painting. Its prepared pigment is known in Chinese as shiqing. Variations from deep to pale blue can come not only from mixing colors but also from differences in pigment particle size. Lapis lazuli can also be processed into a blue pigment, but it is a different material—not every blue in a thangka comes from lapis.

Green | Malachite

Ground and separated into different particle sizes, malachite produces the pigment known in Chinese as shilü. Its range of greens can bring depth to mountains and foliage, as well as robes and decorative patterns. Different grades give the artist a choice of tones and textures.

Red | Cinnabar and Red Ochre

Cinnabar is one traditional source of red pigment. Red ochre, which contains iron oxide, also has a long history in painting. Their compositions and visual qualities differ, allowing artists to choose and combine reds with brighter or more subdued effects.Traditional thangka materials extend beyond minerals. They may also include plant-based colorants, ink, and gold for decorative details. The combination varies by artistic tradition, period, and individual work.

02 | Preparing Pigment Takes Patience

A palette of prepared powders shows the variety of colors available to the painter.
A colorful stone does not immediately become a usable paint.
Preparation typically begins with selecting the material and removing impurities, followed by crushing, grinding, and grading. Some traditional methods use differences in how quickly particles settle in water to separate them by size—a process known as levigation or sedimentation grading.
For pigments such as azurite and malachite, finer is not always better. Particle size can affect the depth of color, coverage, and surface texture. The goal is to prepare the right pigment for the painting, rather than simply the finest possible powder.
Behind a seemingly simple bowl of pigment lies careful judgment and repeated preparation.

03 | A Binder Holds the Color in Place

The worktable brings together the colors and tools used throughout the painting process.
Mineral powder supplies the color. A binder helps it adhere.
Traditional thangka painters often mix pigments with animal glue. The proportions of glue and water must suit the pigment and the intended application, allowing the particles to spread with the brush and remain on the surface after drying.
The canvas also requires preparation. Stretching, priming, and smoothing create a suitable foundation for painting. Pigment, binder, and ground work together to support the fine brushwork that follows.

04 | Layer by Layer, Brushstroke by Brushstroke

Taking up color, placing a brushstroke, and refining a detail are all part of the artist’s patient work.
Once the drawing is complete, the artist gradually fills in areas of color, develops shading, and adds fine lines to define robes, flowers, foliage, and ornamentation. Each stage calls for a different kind of control: even coverage across larger areas, subtle transitions between tones, and a steady hand for delicate outlines.
Mineral pigments contribute color and texture. The artist’s skill brings those materials together into a complete work.
From a distance, the painting reveals a harmonious palette. Up close, fine brushstrokes, subtle tonal changes, and the texture of the materials invite a closer look.

05 | How Does Color Endure?

Materials and technique both contribute to the finished painting. Its long-term condition also depends on how it is cared for.
Some historic thangkas retain remarkable color, partly because certain mineral pigments have good color stability. A painting’s condition also depends on its binder, canvas preparation, painting technique, and the environment in which it has been kept.
Natural minerals are not a guarantee against color change. Avoiding direct sunlight, damp conditions, smoke, dust, and sharp fluctuations in temperature and humidity is an important part of caring for a thangka. Lasting beauty depends on both the care taken in making a painting and the care it receives afterward.