Researchers Rediscover Lost Ming Dynasty Goldsmithing Technique

Researchers Rediscover Lost Ming Dynasty Goldsmithing Technique

Researchers in China have successfully recreated a sophisticated goldsmithing technique that disappeared centuries ago, revealing how Ming Dynasty artisans produced some of imperial China's most exquisite gold jewellery.

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The breakthrough, published in npj Heritage Science, focuses on Jin zhe si, an intricate decorative method that transformed ultra-thin sheets of gold into beautifully folded and corrugated designs with a soft satin-like appearance. Although historical documents described the technique, the exact manufacturing process had remained unknown until now.

The research centered on a remarkable pair of gold gourd-shaped earrings recovered from the tomb of Prince Zhu Zairong, a Ming Dynasty prince who died in AD 1545. His burial in Hubei Province has produced some of the finest surviving examples of Ming imperial jewellery, making it an ideal case study for investigating ancient Chinese metalworking techniques.

To uncover the secrets behind the earrings, researchers combined microscopic examination with experimental archaeology. Every detail of the original artifacts was carefully analyzed before scientists attempted to recreate the manufacturing process using traditional methods and historical descriptions preserved in ancient texts.

Their experiments revealed that the key to the technique lay in the extraordinary flexibility of high-purity gold. Researchers compared gold, silver, and aluminum foils under identical conditions and discovered that only nearly pure gold could withstand repeated folding into complex three-dimensional shapes without cracking or breaking.

The study also overturned previous assumptions about how the decorative surface was created. Rather than engraving or embossing the finished jewelry, Ming craftsmen achieved the distinctive satin-like texture by carefully folding and corrugating extremely thin sheets of gold during the manufacturing process itself.

This successful reconstruction bridges a centuries-old gap between written historical records and surviving archaeological evidence. It provides the clearest explanation yet of how Ming Dynasty goldsmiths produced such delicate and intricate ornaments using techniques that gradually disappeared over time.

Beyond solving a long-standing archaeological mystery, the research highlights the extraordinary technical skill possessed by craftsmen working for the Ming imperial court. Their understanding of precious metals allowed them to manipulate gold in ways that continue to impress modern scientists and conservators.

Researchers also believe the project demonstrates the growing value of experimental archaeology in cultural heritage studies. By combining advanced scientific analysis with practical reconstruction, scholars can recover forgotten manufacturing techniques that survive only in archaeological finds and historical documents.

The study further contributes to the preservation of China's traditional craftsmanship by documenting a manufacturing process that had effectively vanished for centuries. The reconstructed method may also assist museum conservators in identifying authentic Ming Dynasty artifacts and improving restoration techniques for historic gold objects.

The research was conducted by Tian Zhihao, Ren Kai, and Jiang Zhenyu of the Gemmological Institute at the China University of Geosciences in Wuhan. Their work offers a remarkable glimpse into the technological achievements of Ming Dynasty artisans and provides new appreciation for one of the finest traditions in the history of Chinese jewelry making.

Hundreds of Pilgrim Medallions Spanning Four Centuries Discovered in Switzerland

Hundreds of Pilgrim Medallions Spanning Four Centuries Discovered in Switzerland

Archaeologists in Switzerland have uncovered an extraordinary collection of hundreds of religious pilgrim medallions dating from the 17th to the 20th centuries, offering a remarkable glimpse into centuries of European pilgrimage, faith, and everyday devotion.

The remarkable discovery was made in Villmergen by a metal detectorist working in cooperation with heritage authorities. Recovered from a single location, the medallions represent pilgrimage traditions that spanned more than 400 years and connected worshippers with some of Europe's most important religious destinations.

Image Credit : Abteilung Kultur

Among the largest group of finds are medallions from Einsiedeln Abbey, one of Switzerland's most famous Marian pilgrimage sites. Many feature the revered image of the Virgin Mary that has attracted pilgrims for centuries. Other medallions originated from the Bavarian pilgrimage centers of Ettal and Wesobrunn in southern Germany.

Several artifacts traveled even greater distances. Researchers identified medallions from Rome depicting the city's four Holy Doors, which are opened only during Jubilee Years celebrated every 25 years. Pilgrims who passed through these sacred doors received indulgences, making these medallions treasured reminders of their spiritual journeys.

The collection also includes examples from Lourdes in southern France, one of the world's best-known Marian pilgrimage destinations that continues to welcome millions of visitors annually.

Archaeologists explain that these objects served far more than a decorative purpose. Many believers wore them as pendants or attached them to rosaries, believing they offered divine protection against illness, accidents, and misfortune. Others were placed above cradles, displayed inside homes, or positioned near fields and crops to seek blessings and protection.

Several medallions honored saints associated with specific forms of protection. One depicts Saint Anastasius the Persian, traditionally invoked for relief from headaches and mental illness. Another features Saint Anthony, the patron saint of lost objects. The heavy wear visible on this medallion, along with a repaired suspension hole, suggests it remained a cherished personal possession for many years.

Researchers say the collection demonstrates how pilgrimage souvenirs became deeply integrated into everyday religious life. Church authorities actively encouraged their use by distributing devotional medals and other sacred objects that helped strengthen personal faith and preserve memories of important pilgrimages.

The discovery provides valuable insight into the religious traditions, travel networks, and devotional practices that connected Christian communities across Europe for centuries. Officials believe the remarkable collection represents one of Switzerland's most significant finds of early modern pilgrimage artifacts and offers a unique window into the spiritual lives of generations of worshippers.