plate no. 8183

Saint Cosmas and Saint Damian before Lisius

panel, temperaEarly Renaissancereligious paintingfiguresarchitecturereligious scenecolumnsrobesthrone

recreation guide

This recreation focuses on Fra Angelico’s *Saint Cosmas and Saint Damian before Lisius* (c. 1440), a work that exemplifies the artist’s transition from late Gothic conventions to Early Renaissance naturalism. The painting is characterized by the 'sweetness and gentleness' of its figures, whose bearing and expression are noted by Vasari as coming 'nearer to the truth' than those of other artists (Source 1). While the work likely employs the lavish gilded robes and brilliance of color associated with Angelico’s Vatican chapel commissions, it also demonstrates the solidity and three-dimensional form emerging in his later altarpieces, where drapery follows the structure of the bodies beneath (Source 4). The medium is tempera on panel, requiring a meticulous approach to layering and color mixing that avoids the hue shifts common in oil painting.

estimated time

40-60 hours over 8-12 sessions

materials

7 items

steps

6 in sequence

materials

item	purpose	modern equivalent
Gesso ground on wood panel	Traditional support for tempera painting, providing a smooth, absorbent surface.	Pre-primed gesso panel or MDF board with rabbit-skin glue gesso
Egg tempera paints	Primary medium for the artwork, allowing for fine detail and luminous color layers.	Commercial egg tempera or homemade egg yolk emulsion with dry pigments
Azurite pigment	Historically used by Angelico for blue tones, particularly in garments and backgrounds.	Natural azurite powder or high-quality phthalo blue mixed with white for tempera consistency
Vermilion pigment	Used for reds in robes and flesh tones, noted in Angelico’s altarpieces.	Cinnabar substitute or cadmium red light (with caution for toxicity)
Gold leaf	For haloes and decorative edges on garments, reflecting Gothic conventions retained by Angelico.	23k gold leaf or high-quality imitation gold leaf
Charcoal	For initial underdrawing and shading, allowing for easy correction before paint application.	Vine charcoal or compressed charcoal
Raw umber	For setting the palette and establishing mid-tones in the underpainting stage.	Raw umber oil or tempera paint

preparation

surface prep

Prepare a wood panel with multiple layers of gesso to create a smooth, white ground. This is essential for tempera painting, which relies on the reflective quality of the white ground to achieve luminosity. Angelico’s works, particularly his altarpieces, often feature finely worked gold grounds or bright, clear surfaces that require a pristine base (Source 4). Ensure the surface is sealed with rabbit-skin glue to prevent the tempera from soaking in too deeply.

underdrawing

Begin with a charcoal underdrawing. As advised in traditional practice, draw and shade in charcoal to model forms before applying paint. This allows for corrections without damaging the final paint layers, as charcoal offers little resistance to a brush and can be erased with bread if needed (Source 8). Focus on the 'solidity, three-dimensional form, and naturalism' of the figures, ensuring the drapery follows the structure of the bodies beneath (Source 4).

underpainting

Apply a thin wash of raw umber to establish the basic tonal values. This step helps in defining the light and shadow masses before introducing color. While specific underpainting techniques for this exact work are not detailed in the sources, the general practice of establishing broad masses before finish is recommended for correcting weaknesses in handling large areas (Source 5).

color palette

Luminous Blue

Azurite mixed with white lead or egg white

Garments and backgrounds, consistent with Angelico’s use of azurite in prestigious altarpieces (Source 4).

Vibrant Red

Vermilion

Robes and accents, reflecting the 'brilliance of colour' found in his Vatican chapel works (Source 1, Source 4).

Gold

Gold leaf applied over size

Haloes and garment edges, adhering to Gothic decorative conventions (Source 4).

Neutral Gray

Black and white, or complementary colors mixed to neutralize

Shadows and background elements, to avoid hue shifts when darkening colors (Source 3).

composition

The composition likely features a 'careful arrangement of a few significant figures,' a trait Angelico demonstrated in his San Marco frescoes (Source 1). The figures should convey a sense of physical weight and humility, with expressions that are sweet and gentle (Source 1). The use of linear perspective, which Angelico demonstrated in his Annunciation paintings, may be evident in the architectural elements or spatial arrangement, though specific details of this painting’s layout are not described in the sources (Source 4).

step by step

underdrawing→underpainting→first pass→refining→finishing→varnishing

underdrawing

step 01
Sketch the figures in charcoal, focusing on the correct proportions and the gentle, truthful expressions characteristic of Angelico’s saints.
Tip — Make corrections in the charcoal stage to avoid fatal errors in paint (Source 8).
Charcoal underdrawing

underpainting

step 02
Apply a thin wash of raw umber to establish the basic light and shadow masses.
Tip — Use this stage to check the overall composition and tonal balance.
Imprimatura

first pass

step 03
Begin applying tempera colors in thin, glazing layers. Start with the lighter tones and work towards the darker shadows.
Tip — Avoid adding black to darken colors, as this can cause hue shifts towards green or blue (Source 3).
Tempera glazing

refining

step 04
Refine the details of the drapery, ensuring it follows the structure of the bodies beneath to convey physical weight.
Tip — Use complementary colors to neutralize and darken hues without shifting the hue (Source 3).
Drapery modeling

finishing

step 05
Apply gold leaf to the haloes and decorative edges of the garments, adhering to the Gothic conventions present in Angelico’s work.
Tip — Ensure the size is tacky before applying the leaf to prevent lifting.
Gold leaf application

varnishing

step 06
Apply a final varnish to protect the tempera layers and enhance the luminosity of the colors.
Tip — Allow the painting to dry completely before varnishing.
Varnishing

critical techniques

Color Mixing with Complements

To darken colors without shifting their hue, mix with their complementary color rather than black. For example, use purplish-red to darken yellowish-green (Source 3).

Gentle Expression

Render the faces with sweetness and gentleness, aiming for a truthful bearing that reflects Angelico’s piety and humility (Source 1).

Solidity of Form

Ensure the figures have three-dimensional form and physical weight, with drapery that follows the body’s structure (Source 4).

common pitfalls

→Adding black to darken colors, which can cause undesirable hue shifts (Source 3).
→Over-modeling or being too tied down to the outline, which can result in a stiff appearance (Source 5).
→Ignoring the structural integrity of the drapery, leading to a lack of physical weight in the figures (Source 4).
→Applying paint with obvious errors in construction, which is difficult to correct in tempera (Source 8).

what the sources don't tell us

Where the corpus is silent, we say so rather than guess. These are the gaps a complete recreation guide would normally cover that our source passages don't.

·Specific iconographic details of *Saint Cosmas and Saint Damian before Lisius* are not described in the sources, such as the exact gestures of the saints or the appearance of Lisius.
·The specific layout of the architectural background in this particular painting is not detailed.
·The exact ratio of egg yolk to pigment used by Fra Angelico is not specified.

grounded in

The technical procedure in this guide traces to the following classical art-instruction texts.

The Practice of Oil Painting — ON COPYING↗
- ON COPYING — applied to Advice on correcting weaknesses and avoiding over-modeling.
The Practice of Oil Painting — PAINTING FROM LIFE↗
- PAINTING FROM LIFE — applied to Use of charcoal for underdrawing and correction.

cross-referenced from

Named facts about this artwork and artist were checked against these reference pages.

Wikipedia bio — Fra Angelico — part 7↗
- Artistic legacy — applied to Overview of Angelico’s style, sweetness of figures, and use of gold/color.
Wikipedia: Color theory — Color theory — part 6↗
- Color theory — applied to Technique for darkening colors using complements instead of black.
Wikipedia bio — Fra Angelico — part 6↗
- Altarpieces — applied to Use of azurite, vermilion, gold, and the solidity of form in drapery.