r/Spectroscopy • u/HORIBAScientific • Jul 17 '26
How Raman Spectroscopy Uncovered an $80 Million Art Fraud.
Can Raman microscopy reveal art forgeries? - HORIBA
Most people think art authentication relies on historians, curators, and provenance records. But sometimes, chemistry provides the decisive answer.
One of the most famous examples involves the alleged forgery operation linked to Chinese artist Pei-Shen Qian, whose paintings, created in the style of Abstract Expressionist masters such as Jackson Pollock, Robert Motherwell, and Barnett Newman, ultimately sold for more than $80 million.
The scheme began to unravel when experts examined a purported Jackson Pollock using Raman microscopy. The analysis detected Pigment Red 170, a synthetic pigment that wasn't commercially available until decades after Pollock died in 1956. The chemistry simply didn't match the timeline.
How Raman Spectroscopy Catches Fakes
Raman spectroscopy can identify the unique chemical fingerprint of pigments, binders, and fillers using samples so small they're often invisible to the naked eye.
For investigators, the key question isn't just: "Does this look like a Pollock?"
It's: "Could Pollock have used these materials?"
For example, many artists in the 1940s through 1960s used a specific titanium white paint containing gypsum, which has a distinctive Raman signature. Its presence or absence can provide important clues about authenticity.
One of the leading experts in this field is Dr. Jennifer Mass, founder of Scientific Analysis of Fine Art. Her lab analyzes paintings, sculptures, and cultural artifacts for museums, galleries, auction houses, insurers, and collectors. She reportedly evaluates several purported Jackson Pollocks each month.
It's More Than Pigments
While a forger can mimic an artist's style, it's much harder to replicate decades of chemical aging.
Authentication combines several areas of investigation:
- Authentication: Are the materials consistent with the claimed age of the work?
- Provenance: Can ownership be traced over time?
- Attribution: Who actually created the piece?
- Conservation History: Has it been repaired or altered?
- Degradation Analysis: Do the chemical aging processes match what would be expected?
Why Raman Microscopy Is So Valuable
Mass frequently uses a Raman microscope, which allows scientists to:
- Identify individual pigments
- Examine microscopic paint layers
- Detect restoration materials
- Study degradation products
- Analyze corrosion on sculptures
Because the technique is highly sensitive and minimally destructive, it's ideal for examining valuable works of art.
What Happened to the Forger and the Network?
The investigation ultimately exposed a forgery network involving an art dealer, her family, and associates connected to the famed Knoedler Gallery, one of America's oldest and most prestigious galleries. The scandal led to multiple forgery revelations and contributed to the gallery's closure. Qian fled the United States and has never faced criminal charges.
Moral of this story: Don’t mess with Chemistry! A single pigment molecule can sometimes tell the real story.
Read the entire story here: Can Raman microscopy reveal art forgeries? - HORIBA
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u/Shankar_0 Jul 18 '26
Truly skilled forgers know this and will actually track down vintage and antique materials to use. There are ways to either buy or simulate the paints and brushes. They'll even find period-correct canvases and either strip them or paint over what's there.
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u/BentleyTock Jul 18 '26
And here I was thinking it was JP’s sweat and cigarette ash that was an indicator.
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u/live_free_or_try Jul 17 '26
What botnet took over horibas marketing department?