A nine pieces parure of sapphires and diamonds, from a collection owned by Napoleon?s adopted daughter Stephanie de Beauharnais, is displayed 200 years after the Emperor's death during a preview at Christie?s before their May 12 auction sale, in Geneva, Switzerland, May 5, 2021. REUTERS/Denis Balibouse

A staff holds a sapphire and diamond brooch part of a nine pieces parure of sapphires and diamonds, owned by Napoleon?s adopted daughter Stephanie de Beauharnais, displayed 200 years after the Emperor's death, during a preview at Christie?s before their May 12 auction sale, in Geneva, Switzerland, May 5, 2021. REUTERS/Denis Balibouse

A glass of yellow peas and another one of the final product are pictured after a media presentation of the Nestle new product, a milk alternative made from yellow peas called "Wunda", at Nestle research center at Vers-chez-les-Blanc in Lausanne, Switzerland, May 4, 2021. Picture taken May 4, 2021. REUTERS/Denis Balibouse

Bottles of Nestle new product, a milk alternative made from yellow peas called "Wunda", are pictured after a media presentation at Nestle research center at Vers-chez-les-Blanc in Lausanne, Switzerland, May 4, 2021. Picture taken May 4, 2021. REUTERS/Denis Balibouse

Bottles of Nestle new product, a milk alternative made from yellow peas called "Wunda", are pictured after a media presentation at Nestle research center at Vers-chez-les-Blanc in Lausanne, Switzerland, May 4, 2021. Picture taken May 4, 2021. REUTERS/Denis Balibouse

A staff pours Nestle new product, a milk alternative made from yellow peas called "Wunda", into a glass during a media presentation at Nestle research center at Vers-chez-les-Blanc in Lausanne, Switzerland, May 4, 2021. Picture taken May 4, 2021. REUTERS/Denis Balibouse

Bottles of Nestle new product, a milk alternative made from yellow peas called "Wunda", are pictured after a media presentation at Nestle research center at Vers-chez-les-Blanc in Lausanne, Switzerland, May 4, 2021. Picture taken May 4, 2021. REUTERS/Denis Balibouse

The Olympic rings are pictured among solar panels on top of the International Olympic Committee (IOC) headquarters in Lausanne, Switzerland, May 3, 2021. Picture taken with a drone. REUTERS/Denis Balibouse

The Olympic rings are pictured among solar panels on top of the International Olympic Committee (IOC) headquarters in Lausanne, Switzerland, May 3, 2021. Picture taken with a drone. REUTERS/Denis Balibouse

The Olympic rings are pictured in front of the International Olympic Committee (IOC) headquarters in Lausanne, Switzerland, May 3, 2021. Picture taken with a drone. REUTERS/Denis Balibouse

The Olympic rings are pictured among solar panels on top of the International Olympic Committee (IOC) headquarters in Lausanne, Switzerland, May 3, 2021. Picture taken with a drone. REUTERS/Denis Balibouse

The Olympic rings are pictured among solar panels on top of the International Olympic Committee (IOC) headquarters in Lausanne, Switzerland, May 3, 2021. Picture taken with a drone. REUTERS/Denis Balibouse

Boats prepare to line up on Leman Lake to reveal the invisible French-Swiss border during an artistic event called "Brief Alignment" by Lausanne architect Bastian Marzoli, in Saint-Gingolph, near Geneva, Switzerland, May 2, 2021. REUTERS/Denis Balibouse

Boats prepare to line up on Leman Lake to reveal the invisible French-Swiss border during an artistic event called "Brief Alignment" by Lausanne architect Bastian Marzoli, in Saint-Gingolph, near Geneva, Switzerland, May 2, 2021. REUTERS/Denis Balibouse

Boats prepare to line up on Leman Lake to reveal the invisible French-Swiss border during an artistic event called "Brief Alignment" by Lausanne architect Bastian Marzoli, in Saint-Gingolph, near Geneva, Switzerland, May 2, 2021. REUTERS/Denis Balibouse

Boats prepare to line up on Leman Lake to reveal the invisible French-Swiss border during an artistic event called "Brief Alignment" by Lausanne architect Bastian Marzoli, in Saint-Gingolph, near Geneva, Switzerland, May 2, 2021. REUTERS/Denis Balibouse

Boats prepare to line up on Leman Lake to reveal the invisible French-Swiss border during an artistic event called "Brief Alignment" by Lausanne architect Bastian Marzoli, in Saint-Gingolph, near Geneva, Switzerland, May 2, 2021. REUTERS/Denis Balibouse

Boats prepare to line up on Leman Lake to reveal the invisible French-Swiss border during an artistic event called "Brief Alignment" by Lausanne architect Bastian Marzoli, in Saint-Gingolph, near Geneva, Switzerland, May 2, 2021. REUTERS/Denis Balibouse

Boats prepare to line up on Leman Lake to reveal the invisible French-Swiss border during an artistic event called "Brief Alignment" by Lausanne architect Bastian Marzoli, in Saint-Gingolph, near Geneva, Switzerland, May 2, 2021. REUTERS/Denis Balibouse

Residents watch from their balconies as Swiss riot police officers stand guard during a May Day demonstration, as the spread of the coronavirus disease (COVID-19) continues, in Zurich, Switzerland May 1, 2021. REUTERS/Arnd Wiegmann

A Swiss riot police officer holds a rubber bullet gun during a May Day demonstration, as the spread of the coronavirus disease (COVID-19) continues, in Zurich, Switzerland May 1, 2021. REUTERS/Arnd Wiegmann

Protestors dressed as clowns pose in front of Swiss riot police officers during a May Day demonstration, as the spread of the coronavirus disease (COVID-19) continues, in Zurich, Switzerland May 1, 2021. REUTERS/Arnd Wiegmann

A Swiss riot police officer holds a rubber bullet gun as he watches over a fence during a May Day demonstration, as the spread of the coronavirus disease (COVID-19) continues, in Zurich, Switzerland May 1, 2021. REUTERS/Arnd Wiegmann

Protestors dressed as clowns pose in front of Swiss riot police officers during a May Day demonstration, as the spread of the coronavirus disease (COVID-19) continues, in Zurich, Switzerland May 1, 2021. REUTERS/Arnd Wiegmann

Swiss riot police officers guard after kettling demonstrators behind mobile fences during a May Day demonstration, as the spread of the coronavirus disease (COVID-19) continues, in Zurich, Switzerland May 1, 2021. REUTERS/Arnd Wiegmann

Swiss riot police officers guard in the smoke of firecrackers during a May Day demonstration, as the spread of the coronavirus disease (COVID-19) continues, in Zurich, Switzerland May 1, 2021. REUTERS/Arnd Wiegmann

Swiss riot police officers guard after kettling demonstrators behind mobile fences during a May Day demonstration, as the spread of the coronavirus disease (COVID-19) continues, in Zurich, Switzerland May 1, 2021. REUTERS/Arnd Wiegmann

People with umbrellas in the colours of Switzerland's national flag stand in front of Swiss riot police officers during a May Day demonstration, as the spread of the coronavirus disease (COVID-19) continues, in Zurich, Switzerland May 1, 2021. REUTERS/Arnd Wiegmann

Protestors gather during a May Day demonstration of Swiss trade unions, as the spread of the coronavirus disease (COVID-19) continues, in Zurich, Switzerland May 1, 2021. Picture taken with a drone. REUTERS/Arnd Wiegmann

A protestor holds up a hammer during a May Day demonstration of Swiss trade unions, as the spread of the coronavirus disease (COVID-19) continues, in Zurich, Switzerland May 1, 2021. REUTERS/Arnd Wiegmann

Protestors gather during a May Day demonstration of Swiss trade unions, as the spread of the coronavirus disease (COVID-19) continues, at the Paradeplatz square in Zurich, Switzerland May 1, 2021. Picture taken with a drone. REUTERS/Arnd Wiegmann

British trade minister Liz Truss speaks to Reuters after a meeting with World Trade Organization (WTO) Director-General Ngozi Okonjo-Iweala in Geneva, Switzerland, April 30, 2021. REUTERS/Cecile Mantovani

British trade minister Liz Truss speaks to Reuters after a meeting with World Trade Organization (WTO) Director-General Ngozi Okonjo-Iweala in Geneva, Switzerland, April 30, 2021. REUTERS/Cecile Mantovani

Kurdish protesters carry flags with a portrait of jailed Kurdistan Workers Party (PKK) leader Abdullah Ocalan during a demonstration in front of the U.S. Consular Agency in Zurich, Switzerland April 29, 2021. REUTERS/Arnd Wiegmann

Kurdish protesters carry flags with a portrait of jailed Kurdistan Workers Party (PKK) leader Abdullah Ocalan during a demonstration in Zurich, Switzerland April 29, 2021. REUTERS/Arnd Wiegmann

Swiss police officers watch Kurdish protesters waving flags during a demonstration in front of the U.S. Consular Agency in Zurich, Switzerland April 29, 2021. REUTERS/Arnd Wiegmann

Kurdish protesters carry flags and banners during a demonstration in Zurich, Switzerland April 29, 2021. REUTERS/Arnd Wiegmann

U.N. Secretary-General Antonio Guterres attends a news conference after a 5+1 Meeting on Cyprus at the United Nations in Geneva, Switzerland April 29, 2021. REUTERS/Denis Balibouse

U.N. Secretary-General Antonio Guterres attends a news conference after a 5+1 Meeting on Cyprus at the United Nations in Geneva, Switzerland April 29, 2021. REUTERS/Denis Balibouse

U.N. Secretary-General Antonio Guterres attends a news conference after a 5+1 Meeting on Cyprus at the United Nations in Geneva, Switzerland April 29, 2021. REUTERS/Denis Balibouse

U.N. Secretary-General Antonio Guterres attends a news conference after a 5+1 Meeting on Cyprus at the United Nations in Geneva, Switzerland April 29, 2021. REUTERS/Denis Balibouse

U.N. Secretary-General Antonio Guterres attends a news conference after a 5+1 Meeting on Cyprus at the United Nations in Geneva, Switzerland April 29, 2021. REUTERS/Denis Balibouse

U.N. Secretary-General Antonio Guterres attends a news conference after a 5+1 Meeting on Cyprus at the United Nations in Geneva, Switzerland April 29, 2021. REUTERS/Denis Balibouse

The company logo is seen during painting works in front of a shop of French luxury fashion brand Hermes in Zurich, Switzerland April 29, 2021. REUTERS/Arnd Wiegmann

The exchange rates and logos of Bitcoin (BTH), Ether (ETH), Litecoin (LTC) and Monero (XMR) to Swiss franc are seen on the display of a cryptocurrency ATM of blockchain payment service provider Bity at House of Satoshi in Zurich, Switzerland April 29, 2021. REUTERS/Arnd Wiegmann

The exchange rates and logos of Bitcoin (BTH), Ether (ETH), Litecoin (LTC) and Monero (XMR) to Swiss franc are seen on the display of a cryptocurrency ATM of blockchain payment service provider Bity at House of Satoshi in Zurich, Switzerland April 29, 2021. REUTERS/Arnd Wiegmann

Josh Pullan, Managing Director of of Sotheby's Global Luxury Division, holds a pair of "Air Jordan 1" shoes worn by NBA champion Michael Jordan during his rookie season in 1984-85 at the Chicago Bulls, at a preview for the "Gamers Only" auction sale in Geneva, Switzerland, April 28, 2021. REUTERS/Denis Balibouse

Josh Pullan, Managing Director of of Sotheby's Global Luxury Division, holds one of "Air Jordan 1" shoes worn by NBA champion Michael Jordan during his rookie season in 1984-85 at the Chicago Bulls, at a preview for the "Gamers Only" auction sale in Geneva, Switzerland, April 28, 2021. REUTERS/Denis Balibouse

A Sotheby's staff holds a pair of "Air Jordan 1" shoes worn by NBA champion Michael Jordan during his rookie season in 1984-85 at the Chicago Bulls, during a preview for the "Gamers Only" auction sale in Geneva, Switzerland, April 28, 2021. REUTERS/Denis Balibouse

A Sotheby's staff holds a pair of "Air Jordan 1" shoes worn by NBA champion Michael Jordan during his rookie season in 1984-85 at the Chicago Bulls, during a preview for the "Gamers Only" auction sale in Geneva, Switzerland, April 28, 2021. REUTERS/Denis Balibouse

Shoes worn by Steve Nash, "Air Jordan 1" worn by Michael Jordan, a pair of Adidas worn by Kevin Garnett, and Nike "Air Pippen V" worn by Scottie Pippen are pictured during an auction preview in Geneva, Switzerland, April 28, 2021. REUTERS/Denis Balibouse

A Sotheby's staff holds a pair of "Air Jordan 1" shoes worn by NBA champion Michael Jordan during his rookie season in 1984-85 at the Chicago Bulls, during a preview for the "Gamers Only" auction sale in Geneva, Switzerland, April 28, 2021. REUTERS/Denis Balibouse

A metal worker speaks on his mobile device next to a Cartier luxury brand logo at a construction site in Geneva, Switzerland, April 28, 2021. REUTERS/Denis Balibouse

Gymnastics - 2021 European Artistic Gymnastics Championships - St. Jakobshalle, Basel, Switzerland - April 25, 2021 Russia's David Belyavskiy REUTERS/Arnd Wiegmann

Gymnastics - 2021 European Artistic Gymnastics Championships - St. Jakobshalle, Basel, Switzerland - April 25, 2021 Turkey's Ferhat Arican REUTERS/Arnd Wiegmann

Gymnastics - 2021 European Artistic Gymnastics Championships - St. Jakobshalle, Basel, Switzerland - April 25, 2021 Turkey's Ahmed Onder REUTERS/Arnd Wiegmann

Gymnastics - 2021 European Artistic Gymnastics Championships - St. Jakobshalle, Basel, Switzerland - April 25, 2021 Switzerland's Christian Baumann REUTERS/Arnd Wiegmann

Gymnastics - 2021 European Artistic Gymnastics Championships - St. Jakobshalle, Basel, Switzerland - April 25, 2021 Germany's Andreas Toba REUTERS/Arnd Wiegmann

Gymnastics - 2021 European Artistic Gymnastics Championships - St. Jakobshalle, Basel, Switzerland - April 25, 2021 Second place Germany's Andreas Toba, first place Russia’s David Belyavskiy and third place Turkey’s Adem Asil celebrate on the podium with their medals after the men's all-round final high bar REUTERS/Arnd Wiegmann

Gymnastics - 2021 European Artistic Gymnastics Championships - St. Jakobshalle, Basel, Switzerland - April 25, 2021 Germany’s Andreas Toba celebrates on the podium with his silver medal after finishing second place in the men’s all-round final high bar REUTERS/Arnd Wiegmann