Ultramarine: the Afghan pigment more precious than gold
December 23, 2025 · 8 min read · by Walensky
Imagine standing before The Virgin of the Rocks by Leonardo da Vinci. The deep blue of Mary's mantle pierces you through. It is not merely a colour — it is a portal to the infinite, a celestial depth that seems to hold eternity itself. This ultramarine blue was no accident. It was the result of an 8,000-kilometre journey, a mineral more precious than gold, and a jealously guarded craft.
This is what the history of ultramarine reveals: a pigment drawn from ancient Afghanistan, an extraction process of extraordinary complexity, and a symbolic value that transformed Western art. For centuries, artists literally invested fortunes to obtain this divine hue. Understanding its origins means stepping into the intimacy of Renaissance workshops, where chemistry met alchemy and every brushstroke represented a treasure.
Today, we look at the masterpieces of Giotto, Fra Angelico or Titian without imagining the obstacles overcome to create these captivating blues. Yet behind every fragment of pigment lies a commercial, technical and spiritual epic that deserves to be told.
I will take you into the Afghan mines, then into the Florentine workshops, to discover how the most coveted blue in the history of art came to be.
The blue gold of the Afghan mountains
It all begins in the mountains of Badakhshan, in the north-east of present-day Afghanistan. There, at over 2,500 metres above sea level, lies the world's only source of exceptional-quality lapis lazuli. The veins of this metamorphic rock, formed some 6,000 years ago, contain lazurite — the mineral responsible for this incomparable blue.
The miners of the time worked in extreme conditions. They extracted these semi-precious stones by hand, with chisel and hammer, in narrow galleries carved into the mountainside. Each block of lapis lazuli then had to be carried by camel along the Silk Roads, crossing Persia and Mesopotamia, and finally reaching Venice — the great trading hub of medieval and Renaissance Europe.
This precious stone was not merely beautiful: it was more expensive than gold by weight. Venetian merchants resold it at a premium to artists' workshops, which had to account for every gram used to their patrons. Commission contracts often specified the exact quantity of ultramarine permitted — a luxury reserved for sacred figures, particularly the Virgin Mary.
The alchemy of pigment: turning stone into colour
Possessing lapis lazuli was not enough. It still had to be transformed into a usable pigment. And this is where the true technical feat begins. Ultramarine — literally oltremare, "beyond the sea" in Italian — required a complex extraction process that only a few masters mastered perfectly.
First, the lapis lazuli was meticulously ground into a fine powder. But this powder also contained impurities: white calcite, golden pyrite, grey particles. To isolate the pure blue lazurite, artisans developed an ingenious technique: levigation in a resin paste.
They mixed the lapis powder with a paste made of pine resin, beeswax and linseed oil. They kneaded this mixture for hours, sometimes days, under lukewarm water mixed with alkaline lye. Gradually, the finest blue particles detached and dispersed into the water, while the impurities remained trapped in the resin.
This tinted water was then collected and left to settle, and at the bottom of the vessel appeared at last the pure ultramarine pigment — a blue of an intensity with no equivalent in nature. The first extractions yielded the deepest and most precious blue. Subsequent ones, progressively lighter, were used for secondary details.
Favorite
Painting sacred figures devotion - Italian Renaissance edition
213,90€
Discover this paintingIn the workshop: sacred blue in the service of the divine
In the Florentine botteghe of the Quattrocento, ultramarine held a place apart. Kept in small, hermetically sealed pots, it was handled with religious caution. Cennino Cennini, in his famous Libro dell'Arte (1390), devotes several chapters to its preparation and use, stressing its incomparable nobility.
Renaissance painters reserved this prestigious blue for the most sacred elements of their compositions. The mantles of the Virgin Mary were its favoured vessel. This association was no coincidence: blue symbolised the heavens, transcendence and divine purity. Using the most expensive pigment in the world to depict the Mother of God was as much an act of devotion as an artistic one.
Fra Angelico, in his frescoes at the San Marco convent in Florence, unfolded skies of vibrant ultramarine that seemed to hold all celestial light. Giotto, a century earlier, had revolutionised Italian painting by using this blue with unprecedented generosity in the Scrovegni Chapel in Padua. Those azure vaults continue to take visitors' breath away today.
But the use of ultramarine was not merely technical — it was also contractual and financial. Patrons negotiated precisely the surface area that would be covered with this precious pigment. Some contracts stipulated: "for the Virgin's mantle: ultramarine of superior quality valued at X florins". Others required the artist to use his own reserves, turning every painting into a risky investment.
— Our selection
When blue becomes strategy
This scarcity naturally gave rise to fascinating workshop strategies. Master painters developed layering techniques to economise the precious pigment. They first applied a layer of azurite — a far cheaper copper blue — then reserved the ultramarine for the final glazes that gave that incomparable depth.
Some less scrupulous — or more desperate — artists attempted to cheat. They over-diluted the pigment or mixed it with less noble blues. Knowledgeable patrons therefore demanded to inspect the raw materials before execution, or even to witness the preparation of the colours. Trust between patron and artist was also played out on the palette.
This economy of blue paradoxically transformed Renaissance aesthetics. Artists developed a subtle chromatic hierarchy : ultramarine for the divine, azurite for the earthly, indigo for shadows. Each shade told a story, signified a degree of sacredness, and established a spiritual geography within the composition.
Venice, thanks to its position as a commercial crossroads, naturally became the centre of this economy of blue. Venetian painters — Bellini, Titian, Veronese — found it easier to access lapis lazuli and developed the famous Venetian palette, in which deep blues converse with golds and vermilion reds in an unmatched chromatic symphony.
— Also to discover
The legacy of a millennial blue
The history of ultramarine does not end with the Renaissance. It runs through the centuries with remarkable constancy. In the seventeenth century, Vermeer used it so generously — notably in Girl with a Pearl Earring — that he fell into serious debt. His passion for this blue probably contributed to the financial precariousness that marked his life.
It was not until 1826 that a French chemist, Jean-Baptiste Guimet, succeeded in artificially synthesising ultramarine. This discovery revolutionised painting: suddenly, what had been worth a fortune became accessible. The Impressionists could use it freely for their skies, shadows and seascapes. Prussian blue, discovered in the eighteenth century, had already offered an alternative, but true synthetic ultramarine finally possessed the same intensity as its mineral ancestor.
Yet even today, some artists and restorers continue to use genuine lapis lazuli to faithfully reproduce ancient works or create exceptional pieces. This Afghan stone continues its millennial journey, carrying within it the whole history of Western art.
Let yourself be inspired by the magic of Renaissance blues
Discover our exclusive collection of paintings inspired by famous artists that capture the essence of these legendary pigments and transform your interior into a living art gallery.
In the same spirit
Convivial Warmth Banquet Painting - renaissance edition
€233.90
Discover this painting →A blue that tells our story
Ultramarine is not merely a colour — it is a window onto our collective history. It speaks of international trade at a time when crossing the world took months. It evokes the value we place on beauty, to the point of investing fortunes to capture a fragment of sky on a wooden panel.
Each time you contemplate a Renaissance painting, look for this blue that is both deep and luminous. Imagine the journey it has made: the Afghan mountains, the caravans of the Silk Road, the Venetian trading posts, the Florentine workshop, the expert hands of the master who ground it, kneaded it, and applied it with devotion.
In our contemporary interiors, reinterpreting this legendary blue means connecting with that centuries-old tradition. It means understanding that certain colours carry far more than pigments: they hold stories, geographies, dreams of the absolute. Ultramarine reminds us that beauty has always had a price, and that this price bears witness to our unquenchable desire for transcendence.
FAQ: Everything you need to know about ultramarine
Why was ultramarine so expensive during the Renaissance?
Ultramarine came exclusively from lapis lazuli mined in Afghanistan, more than 8,000 kilometres from Europe. This mineral had to cross the whole of Asia and the Mediterranean by trade routes. Its rarity, combined with the complexity of extracting it and transforming it into a pure pigment, made it more precious than gold by weight. A single gram of superior-quality ultramarine could cost the equivalent of a skilled artisan's annual wage. Painters therefore used it with extreme parsimony, reserving it for the most sacred elements of their compositions — particularly the Virgin Mary's mantles. This exceptional value turned every use of ultramarine into an artistic and financial statement.
How was ultramarine pigment made from lapis lazuli?
Transforming lapis lazuli into ultramarine pigment was a true technical feat. After grinding the stone into a fine powder, artisans had to separate the pure blue particles (lazurite) from the white and golden impurities. They mixed this powder with a paste of pine resin, beeswax and linseed oil, which they kneaded at length under lukewarm alkaline water. The blue particles gradually detached and dispersed into the water, while the impurities remained trapped in the resin. After settling, the precious blue pigment was recovered at the bottom of the vessel. This process, called levigation, could take several days and required considerable expertise. The first extractions yielded the most intense and precious blue.
Can genuine natural ultramarine still be found today?
Yes, absolutely! Although synthetic ultramarine was invented in 1826 and became the standard for modern painting, natural lapis lazuli is still mined in Afghanistan and processed into traditional pigment. Some fine colour manufacturers offer authentic natural ultramarine, sold at high prices reflecting its rarity. Restorers of ancient works use it to respect original techniques, and some contemporary artists choose this historic pigment to create exceptional works. The difference between natural and synthetic ultramarine is subtle but real: the natural one has a slight granulation and a depth that some consider incomparable. It is a tangible link with five centuries of artistic history.
