A scientific study of a 1,000-year-old Virgin Mary icon in Greece has revealed unusual painting techniques and new evidence about its age. Researchers examining the Byzantine artwork on Santorini found that its wooden panel dates to around 1090 A.D., potentially earlier than previous estimates based on artistic style.
The research, led by Yannis Maniatis, examined an icon preserved in the Church of Panagia Episkopi in Mesa Gonia. Scientists analyzed tiny paint samples and used radiocarbon dating to investigate the artwork’s materials, original colors, and later alterations.
Ancient wooden panel offers clues to icon’s age
The icon depicts the Virgin Mary holding the infant Jesus, who embraces her neck and presses his face against hers. Six religious figures appear along its borders. Earlier studies dated the painting to the 12th or 13th century, with some scholars placing it around 1200. However, radiocarbon testing of the walnut panel produced a central estimate of 1090 A.D., with an uncertainty of approximately 60 years.
Researchers cautioned that the test dates the wood, not the painting itself. Still, the results support an earlier timeline consistent with the church’s Byzantine history.
Scientists uncover unusual Byzantine painting techniques
Microscopic analysis of five paint samples identified traditional pigments, including cinnabar, red ochre, azurite, green earth and lead white. The researchers discovered that the artist mixed different pigments before applying them in single layers. This technique appeared in Christ’s pale green halo, the Virgin Mary’s blue-green clothing and the skin tones of a religious figure. However, Christ’s red garment revealed a different approach.
A 1,000-year-old Virgin Mary icon in Greece is revealing new secrets. Scientists studying the Byzantine artwork on Santorini uncovered unusual painting techniques, hidden original pigments and evidence that its wooden panel dates to around 1090 A.D. pic.twitter.com/yF74KkuM5Y
— Tom Marvolo Riddle (@tom_riddle2025) October 27, 2026
The painter applied a thin layer of iron-rich red earth over a brighter cinnabar base. Researchers noted that Byzantine painters more commonly used these materials in the opposite order. The findings suggest the artist varied painting methods to achieve different colors and visual effects.
Later repainting concealed original Byzantine pigments
Chemical analysis also uncovered evidence of later alterations to the Virgin Mary’s clothing. The outer paint contained cadmium yellow and lithopone, pigments that indicate the repainting occurred no earlier than the late 19th century. Researchers suggested it may have taken place during conservation work in 1975, although an earlier intervention remains possible.
Beneath the newer paint, scientists found an original blue-green layer containing azurite, green earth and lead white. They also identified signs of chemical changes in the copper-based pigment. No gold was detected in the samples, and conservation records reported no surviving gilding. The findings provide rare physical evidence of Middle Byzantine painting practices, helping researchers compare artistic methods across surviving icons and workshops.
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