The sale of the relics has also sparked concern among Buddhist leaders.

The sale of the relics has also sparked concern among Buddhist leaders.

“The Buddha teaches us not to take other people’s possessions without permission,” Amal Abeyawardene of London-based British MahaBodhi Society, told the BBC. “Historical records indicate that the Sakyamuni clan were granted custody of these relics, as the Buddha emanated from their community. Their wish was for these relics to be preserved alongside adornments, such as these gems, so that they may be venerated in perpetuity by the Buddha’s followers.”

Chris Peppé has written that the jewels passed from his great-uncle to his cousin, and in 2013 came to him and two other cousins. That’s when he began researching their discovery by his great-grandfather.

The Los Angeles-based television director and film editor wrote he had found 1898 newspaper reports – from Reuters to the New York Tribune – announcing the find of Buddha’s remains.

“The colonisation of India by the British had been a source of some cultural shame for me [and continues to be] but, amidst the treasure hunters who hauled their finds back to England, there had also been people focused on the pursuit of knowledge,” Chris Peppé writes.

He noted his research revealed a lot about his ancestors who he had dismissed as “prejudiced Victorians from a bygone era”.

“I learned that Willie Peppé’s first wife chose to travel around India for her honeymoon and loved the country and its culture. Sadly, she died from an unspecified illness. I learned that my grandmother was outraged at the land laws that applied to Indian women.

“And I learned that the excavation of the stupa was an attempt by Willie Peppé to provide work for his tenant farmers who had fallen victim to the famine of 1897.”

He writes his great-grandfather’s “technical diagrams of ramps and pulleys suggest that he was also a trained engineer who couldn’t resist a project”.

William Peppé handed the gems, relics and reliquaries to the colonial Indian government: the bone relics went to the Buddhist King of Siam (Rama V). Five relic urns, a stone chest and most other relics were sent to the Indian Museum in Kolkata – then the Imperial Museum of Calcutta.

Only a small “portion of duplicates”, which he was allowed to keep, remained in the Peppé family, he notes. (Sotheby’s notes say Peppé was allowed to keep approximately one-fifth of the discovery.)

Sources told the BBC the auction house considers the “duplicates” to be original items considered surplus to those donated, which the “Indian government permitted Peppé to retain”.

Over the past six years years, the gems have featured in major exhibitions, including one at The Met in 2023. The Peppé family has also launched a website to “share our research”.

Some scholars argue Buddha relics should never be treated as market commodities.

“The Sotheby’s auction transforms these highly sacred materials into saleable objects, in continuation of acts of colonial violence which extracted them from a stupa and called them ‘gems’ and ‘objects of interest to Europeans’, creating a false division with the ash and bone fragments they were consecrated with,” say Thompson and Cheong.

Chris Peppé told the BBC that in all the monasteries he had visited “no Buddhists regard these as corporeal relics”.

“A few Buddhist academics at western universities have recently offered a convoluted, fact-defying logic whereby they may be regarded as such. It’s an academic construct that is not shared by Buddhists in general who are familiar with the details of the find,” he said.

Peppé said the family “looked into donation [of the relics] to temples and museums and they all presented different problems on closer scrutiny”.

“An auction seems the fairest and most transparent way to transfer these relics to Buddhists and we are confident that Sotheby’s will achieve that.”

Some also point to The Koh-i-Noor, seized by the British East India Company and now part of the Crown Jewels, with many Indians viewing it as stolen. Should the Buddha’s jewels be next?

“Repatriation, I believe, is seldom necessary,” says Ahuja. “Such rare and sacred relics that are unique and which define a land’s cultural history, however, deserve the government’s exceptional attention.”