Journal · Technique & materials
What is gold leaf in contemporary painting?
Gold leaf is real gold hammered into ultra-thin sheets, typically 22 to 24 karat, applied to a surface with an adhesive called gilding size. What is often sold under the same name — imitation or "composition" leaf (Dutch metal) — is brass and contains no gold at all. Genuine leaf, laid correctly, does not tarnish.
What gold leaf is — and how genuine leaf differs from imitation
Gold leaf used in painting is real gold hammered or pressed into sheets so thin they are nearly weightless. Genuine leaf ranges from 6 to 24 karat, with 24kt being pure gold; the 22–23.75kt range is the karat most associated with durable, corrosion-resistant results, sometimes alloyed with small amounts of silver or copper — copper warms the tone, silver pales it — which trades a little purity for better handling.
What is frequently sold under a similar name — "imitation gold leaf," "composition leaf," or "Dutch metal" — contains no gold whatsoever. It is made from brass, an alloy of copper and zinc, and costs a fraction of the real material. Fresh off the roll, it can look close enough to gold to fool an untrained eye, which is exactly why the distinction is worth asking about before treating a piece as an investment in materials as well as image.
How gold leaf is applied to a painting
Gold leaf isn't painted on — it's laid. The surface is first prepared with an adhesive called gilding size. The water-based (acrylic) size most commonly used with imitation, aluminum, or copper leaf tacks in 15 to 30 minutes; other size formulations exist for genuine gold leaf and classical gilding, chosen for the working time and finish the piece requires.
Once the size reaches the right tack, the leaf — thinner than paper, closer to floating than sitting on the surface — is laid down and pressed or burnished into place by hand. The process is not mechanized: the skill is entirely in laying the sheet without tearing it or leaving a visible seam, which is why gilding has stayed a specialist craft rather than an industrial one.
Why genuine gold leaf doesn't tarnish — and imitation leaf does
Gold is a noble metal: pure 24-karat gold is completely resistant to corrosion, and the 22–23.75kt leaf typically used by artists keeps most of that resistance — high-karat leaf is rated to hold its finish for 30 years or more even in exterior conditions. That resistance is the entire practical case for genuine leaf over imitation.
Imitation leaf offers no such protection. Because it's brass rather than gold, it oxidizes over time: even when sealed at the time of gilding, unsealed or poorly sealed imitation leaf commonly develops a dull, greenish haze within a few years. On a painting meant to last generations, that difference compounds — genuine leaf tends to read as more luminous with age, while composition leaf discolors.
Why gold leaf raises the price of a piece
Two costs stack on top of the base price of a painting. The material itself isn't cheap, and its cost keeps rising along with the price of gold. But by most accounts from working gilders, that's the smaller of the two costs.
The larger cost is labor. Laying leaf cleanly — without a visible seam, without tearing the sheet — is the part of the process that requires the most skill, and it can't be mechanized or rushed. The craft faces real training and recruitment pressure today, which keeps it a specialist trade rather than an industrial process. On a painting, that labor sits on top of the ordinary cost of stretching, priming, and painting a canvas of the same size.
From the studio
In the studio: how gold leaf sits inside Black & Gold
In Celestial Plan and Golden Passage — the two works in the Black & Gold series — I lay the gold leaf only after the texture paste underneath has fully cured, never before. The relief has to be dry and stable, because leaf will telegraph every ridge and crack beneath it; laying it too early, over paste that's still moving as it dries, is the fastest way to lose a sheet to cracking. I apply it in scattered fragments rather than as a continuous field, on purpose — so the black ground still reads as the dominant plane and the gold interrupts it the way light interrupts a dark room, instead of covering it. Origin of Light, from Heart of Chaos, uses the same leaf over an acrylic ground instead of paste — flatter and more evenly lit, closer to a single strike of light across the canvas than the scattered constellations in the Black & Gold pieces.
Frequently asked
Is gold leaf on a painting real gold?
It depends on the piece and how it's described. Genuine gold leaf is actual gold, hammered into sheets typically 22 to 24 karat, sometimes alloyed with silver or copper. What is sold as "imitation gold leaf," "composition leaf," or "Dutch metal" contains no gold at all — it's brass, an alloy of copper and zinc. Both can look identical when new, so the honest way to know is to ask directly what karat and type of leaf was used; a serious studio will tell you without hesitation.
Does gold leaf tarnish over time?
Genuine gold leaf does not tarnish — pure gold resists corrosion, and the high-karat leaf (roughly 22–23.75kt) commonly used by artists keeps most of that resistance, rated to hold its finish for decades even outdoors. Imitation leaf is a different story: because it contains no gold, just brass, it oxidizes over time and can develop a dull, greenish haze within a few years, even when sealed. This is the single biggest practical reason genuine leaf costs more than the alternative.
Why do gold leaf paintings cost more?
Two costs stack on the base price of a painting. The material itself isn't cheap, and its cost keeps rising along with the price of gold. But by most accounts from working gilders, that's the smaller cost — the larger one is labor. Laying leaf cleanly, without visible seams or tears, is a specialized skill that can't be mechanized, and there are relatively few trained gilders working today. That labor is added on top of the normal cost of stretching, priming, and painting a canvas of the same size.
How do you clean a painting with gold leaf?
Very little, and very gently. Conservation guidance for gilded surfaces recommends dusting only, with a soft, natural-hair brush — never a feather duster, which can scratch the leaf — and avoiding any moisture, glass cleaner, or household product, since a damp cloth can lift gold leaf entirely. Any visible flaking, discoloration, or loss should go to a conservator rather than a DIY attempt; the surface is too thin to risk it.
Is gold leaf fragile to transport?
Yes, more than an ordinary painted surface. Gold leaf is extraordinarily thin, and direct contact — even light finger pressure — creates friction that can abrade or lift it. Careful packing keeps the surface from touching packing material directly, and a piece with gold leaf should be handled by the frame or the edges of the canvas, never the face of the work, during unpacking and hanging.
Can damaged gold leaf be repaired?
Small losses can sometimes be patched by re-gilding the affected area, matching karat and leaf type as closely as possible. This is conservator's work, not a touch-up to attempt at home — mismatched leaf, size, or sheen shows clearly under raking light, and an amateur repair usually makes a small loss more visible, not less.
Sources
- GildedPlanet — 2026-07-29
- GildedPlanet — 2026-07-29
- John Canning & Co. — 2026-07-29
- TALAS — 2026-07-29
- Artifact Services — 2026-07-29
- Heritage Crafts Association — 2026-07-29
See the gold leaf works in person
Celestial Plan and Golden Passage carry gold leaf over sculpted texture paste; Origin of Light carries it over a flatter acrylic ground. Ask the studio for detail photographs in raking light before deciding.
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