Assistant curator Andrew Tucker holds an eighteenth century jewel, depicting Prudence, which forms one of over one hundred and fifty Masonic jewels on display for the exhibition 'Bejewelled' at the Museum of Freemasonry in London, Britain, September 18, 2018. REUTERS/Toby Melville TPX IMAGES OF THE DAY 

Assistant curator Andrew Tucker holds an eighteenth century jewel, depicting Prudence, which forms one of over one hundred and fifty Masonic jewels on display for the exhibition 'Bejewelled' at the Museum of Freemasonry in London, Britain, September 18, 2018. REUTERS/Toby Melville 

Curator Mark Dennis views the Authors' Lodge jewel, worn by members including Rudyard Kipling and Sir Arthur Conan Doyle, through a magnifying glass, which forms one of over one hundred and fifty Masonic jewels on display for the exhibition 'Bejewelled' at the Museum of Freemasonry in London, Britain, September 18, 2018. REUTERS/Toby Melville 

Curator Mark Dennis holds a Diamond Jubilee jewel, depicting Queen Victoria, which forms one of over one hundred and fifty Masonic jewels on display for the exhibition 'Bejewelled' at the Museum of Freemasonry in London, Britain, September 18, 2018. REUTERS/Toby Melville 

Curator Mark Dennis holds a Diamond Jubilee jewel, depicting Queen Victoria, which forms one of over one hundred and fifty Masonic jewels on display for the exhibition 'Bejewelled' at the Museum of Freemasonry in London, Britain, September 18, 2018. REUTERS/Toby Melville 

Curator Mark Dennis views the Authors' Lodge jewel, worn by members including Rudyard Kipling and Sir Arthur Conan Doyle, through a magnifying glass, which forms one of over one hundred and fifty Masonic jewels on display for the exhibition 'Bejewelled' at the Museum of Freemasonry in London, Britain, September 18, 2018. REUTERS/Toby Melville 

French President Francois Hollande (L) receives a distinction from the Grand Master of the Grand Orient of France Lodge ("Grand Maître du Grand Orient de France") Christophe Habas during a visit to the Freemasonry museum in Paris, France, February 27, 2017. REUTERS/Christophe Archambault/Pool 

French President Francois Hollande delivers a speech during his visit at the Freemasonry museum (Musee de la Franc-maçonnerie) in Paris, France, February 27, 2017. REUTERS/Christophe Archambault/Pool 

French President Francois Hollande (C) visits the Freemasonry museum (Musee de la Franc-maçonnerie) in Paris, France, February 27, 2017. REUTERS/Christophe Archambault/Pool 

French President Francois Hollande (2ndR) looks on as he visits the Freemasonry museum (Musee de la Franc-maçonnerie) in Paris, France, February 27, 2017. REUTERS/Christophe Archambault/Pool 

French President Francois Hollande (R) looks through the pane of a display case as he visits the Freemasonry museum (Musee de la Franc-maçonnerie) in Paris, France, February 27, 2017. REUTERS/Christophe Archambault/Pool 

French President Francois Hollande (2ndR) visits the Freemasonry museum (Musee de la Franc-maçonnerie) in Paris, France, February 27, 2017. REUTERS/Christophe Archambault/Pool 

French President Francois Hollande (R) looks through the pane of a display case as he visits the Freemasonry museum (Musee de la Franc-maçonnerie) in Paris, France, February 27, 2017. REUTERS/Christophe Archambault/Pool 

French President Francois Hollande visits the Freemasonry museum (Musee de la Franc-maçonnerie) in Paris, France, February 27, 2017. REUTERS/Christophe Archambault/Pool 

French President Francois Hollande (2ndL) visits the Freemasonry museum (Musee de la Franc-maçonnerie) in Paris, France, February 27, 2017. REUTERS/Christophe Archambault/Pool 

French President Francois Hollande (C) visits the Freemasonry museum (Musee de la Franc-maçonnerie) in Paris, France, February 27, 2017. REUTERS/Christophe Archambault/Pool 

A visitor looks at documents during a press presentation of the exhibition "La franc-maconnerie" (Freemasonry) at the National Library of France (BnF) in Paris, France, April 11, 2016. REUTERS/Benoit Tessier 

Visitors look at a lithography during a press presentation of the exhibition "La franc-maconnerie" (Freemasonry) at the National Library of France (BnF) in Paris, France, April 11, 2016. REUTERS/Benoit Tessier 

Tools, symbol of Freemasonry, are seen during a press presentation of the exhibition "La franc-maconnerie" (Freemasonry) at the National Library of France (BnF) in Paris, France, April 11, 2016. REUTERS/Benoit Tessier 

Visitors are seen during a press presentation of the exhibition "La franc-maconnerie" (Freemasonry) at the National Library of France (BnF) in Paris, France, April 11, 2016. REUTERS/Benoit Tessier 

A masonic banner is seen during a press presentation of the exhibition "La franc-maconnerie" (Freemasonry) at the National Library of France (BnF) in Paris, France, April 11, 2016. REUTERS/Benoit Tessier 

A masonic collar is seen during a press presentation of the exhibition "La franc-maconnerie" (Freemasonry) at the National Library of France (BnF) in Paris, France, April 11, 2016. REUTERS/Benoit Tessier 

A masonic collar is seen during a press presentation of the exhibition "La franc-maconnerie" (Freemasonry) at the National Library of France (BnF) in Paris, France, April 11, 2016. REUTERS/Benoit Tessier 

Tools, symbol of Freemasonry, are seen during a press presentation of the exhibition "La franc-maconnerie" (Freemasonry) at the National Library of France (BnF) in Paris, France, April 11, 2016. REUTERS/Benoit Tessier 

Tools, symbol of Freemasonry, are seen during a press presentation of the exhibition "La franc-maconnerie" (Freemasonry) at the National Library of France (BnF) in Paris, France, April 11, 2016. REUTERS/Benoit Tessier 

A painting showing the square and compasses, the symbol of Freemasonry, is displayed during a press presentation of the exhibition "La franc-maconnerie" (Freemasonry) at the National Library of France (BnF) in Paris, France, April 11, 2016. REUTERS/Benoit Tessier 

Masonic decorations are displayed during a press presentation of the exhibition "La franc-maconnerie" (Freemasonry) at the National Library of France (BnF) in Paris, France, April 11, 2016. REUTERS/Benoit Tessier 

Tools, symbol of Freemasonry, are seen during a press presentation of the exhibition "La franc-maconnerie" (Freemasonry) at the National Library of France (BnF) in Paris, France, April 11, 2016. REUTERS/Benoit Tessier 

Tools, symbol of Freemasonry, are seen during a press presentation of the exhibition "La franc-maconnerie" (Freemasonry) at the National Library of France (BnF) in Paris, France, April 11, 2016. REUTERS/Benoit Tessier 

Curator Allison Gardner poses for photographers with a hand made masonic pendant, made by Colour Sergeant William C.Lilly during the American civil war, at Freemason's Hall in London June 28, 2011. An exhibition entitled 'The Patriot Mason:Freemasonry in American Society' opens on Monday July 4 until December 22. REUTERS/Paul Hackett (BRITAIN - Tags: SOCIETY) 

A curator holds a copy of the first masonic book published in the U.S. entitled "The Constitutions of the Free-masons" by James Anderson, and published by Benjamin Franklin in 1734, during a media viewing a Freemasons' Hall in London June 28, 2011. The exhibition "The Patriot Mason: Freemasonry in American Society" opens on July 4 and will run until December 22. REUTERS/Paul Hackett (BRITAIN - Tags: SOCIETY) 

Curator Allison Gardner poses for photographers as she makes adjustments to a mannequin wearing the uniform of a masonic Knight Templar at Freemason's Hall in London June 28, 2011. The exhibition "The Patriot Mason: Freemasonry in American Society" opens on July 4 and will run until December 22. REUTERS/Paul Hackett (BRITAIN - Tags: SOCIETY) 

Exterior view of the Museum of Freemasonry in Paris February 9, 2010, two days before it reopens to the public. Freemasonry is a world-wide fraternity dedicated to the brotherhood of man with the belief in a supreme being. REUTERS/Charles Platiau (FRANCE - Tags: SOCIETY) 

Eighteenth century china plates made for Freemasons who belonged to the lodge in La Rochelle is displayed in the Museum of Freemasonry in Paris February 9, 2010, two days before it reopens to the public. Freemasonry is a world-wide fraternity dedicated to the brotherhood of man with the belief in a supreme being. REUTERS/Charles Platiau (FRANCE - Tags: SOCIETY) 

The Freemason book of reference is displayed in the Museum of Freemasonry in Paris February 9, 2010, two days before it reopens to the public. Freemasonry is a world-wide fraternity dedicated to the brotherhood of man with the belief in a supreme being. REUTERS/Charles Platiau (FRANCE - Tags: SOCIETY) 

Documents used during induction of new Freemasons are displayed in the Museum of Freemasonry in Paris February 9, 2010, two days before it reopens to the public. Freemasonry is a world-wide fraternity dedicated to the brotherhood of man with the belief in a supreme being. REUTERS/Charles Platiau (FRANCE - Tags: SOCIETY) 

Eighteenth century china plates made for Freemasons who belonged to the lodge in La Rochelle is displayed in the Museum of Freemasonry in Paris February 9, 2010, two days before it reopens to the public. Freemasonry is a world-wide fraternity dedicated to the brotherhood of man with the belief in a supreme being. REUTERS/Charles Platiau (FRANCE - Tags: SOCIETY) 

A freemason apron, is displayed in the Museum of Freemasonry in Paris February 9, 2010, two days before it re-opens to the public. Freemasonry is a world-wide fraternity dedicated to the brotherhood of man with the belief in a supreme being. REUTERS/Charles Platiau (FRANCE - Tags: SOCIETY) 

Objects which explain the different ranks and rites in Freemasonry are displayed in the Museum of Freemasonry in Paris February 9, 2010, two days before it reopens to the public. Freemasonry is a world-wide fraternity dedicated to the brotherhood of man with the belief in a supreme being. REUTERS/Charles Platiau (FRANCE - Tags: SOCIETY) 

The "Tablier de Voltaire", a freemason apron from the 18th century, is displayed in the Museum of Freemasonry in Paris February 9, 2010, two days before it re-opens to the public. Freemasonry is a world-wide fraternity dedicated to the brotherhood of man with the belief in a supreme being. REUTERS/Charles Platiau (FRANCE - Tags: SOCIETY) 

A French Freemason's vest seen prior to a Lodge meeting in Bordeaux, southwestern France on March 27, 2008. Freemasonry is a world-wide fraternity dedicated to the brotherhood of man with the belief in a supreme being. REUTERS/Regis Duvignau (FRANCE) 

A French Freemason mallet and apron are seen prior to a Lodge meeting in Bordeaux, southwestern France on March 27, 2008. Freemasonry is a world-wide fraternity dedicated to the brotherhood of man with the belief in a supreme being. REUTERS/Regis Duvignau (FRANCE) 

A French Freemason mallet and vest with the square insignia are seen prior to a Lodge meeting in Bordeaux, southwestern France on March 27, 2008. Freemasonry is a world-wide fraternity dedicated to the brotherhood of man with the belief in a supreme being. REUTERS/Regis Duvignau (FRANCE) 

French Freemason members stand together at a Lodge meeting in Bordeaux, southwestern France on March 27, 2008. Freemasonry is a world-wide fraternity dedicated to the brotherhood of man with the belief in a supreme being. REUTERS/Regis Duvignau (FRANCE) 

A French Freemason holds a candle prior to a Lodge meeting in Bordeaux, southwestern France on March 27, 2008. Freemasonry is a world-wide fraternity dedicated to the brotherhood of man with the belief in a supreme being. REUTERS/Regis Duvignau (FRANCE) 

French Freemason members stand together at a Lodge meeting in Bordeaux, southwestern France on March 27, 2008. Freemasonry is a world-wide fraternity dedicated to the brotherhood of man with the belief in a supreme being. REUTERS/Regis Duvignau (FRANCE) 

French Freemason members join hands during a Lodge meeting in Bordeaux, southwestern France on March 27, 2008. Freemasonry is a world-wide fraternity dedicated to the brotherhood of man with the belief in a supreme being. REUTERS/Regis Duvignau (FRANCE) 

A French Freemason holds a mallet prior to a Lodge meeting in Bordeaux, southwestern France on March 27, 2008. Freemasonry is a world-wide fraternity dedicated to the brotherhood of man with the belief in a supreme being. REUTERS/Regis Duvignau (FRANCE) 

A French Freemason holds a mallet prior to a Lodge meeting in Bordeaux, southwestern France on March 27, 2008. Freemasonry is a world-wide fraternity dedicated to the brotherhood of man with the belief in a supreme being. REUTERS/Regis Duvignau (FRANCE) 

French Freemason members attend a Lodge meeting in Bordeaux, southwestern France on March 27, 2008. Freemasonry is a world-wide fraternity dedicated to the brotherhood of man with the belief in a supreme being. REUTERS/Regis Duvignau (FRANCE) 

A square and a compass rest on an open Bible near a mallet during a Lodge meeting of French Freemasons in Bordeaux, southwestern France on March 27, 2008. Freemasonry is a world-wide fraternity dedicated to the brotherhood of man with the belief in a supreme being. REUTERS/Regis Duvignau (FRANCE) 

A French Freemason holds a candle prior to a Lodge meeting in Bordeaux, southwestern France on March 27, 2008. Freemasonry is a world-wide fraternity dedicated to the brotherhood of man with the belief in a supreme being. REUTERS/Regis Duvignau (FRANCE) 

A French Freemason stands behind a Bible where a square and a compass are placed prior to a Lodge meeting in Bordeaux, southwestern France on March 27, 2008. Freemasonry is a world-wide fraternity dedicated to the brotherhood of man with the belief in a supreme being. REUTERS/Regis Duvignau (FRANCE) 

A French Freemason holds a mallet prior to a Lodge meeting in Bordeaux, southwestern France on March 27, 2008. Freemasonry is a world-wide fraternity dedicated to the brotherhood of man with the belief in a supreme being. REUTERS/Regis Duvignau (FRANCE) 

A French Freemason member holds his hand over a square and a compass which rest on a Bible during a Lodge meeting in Bordeaux, southwestern France on March 27, 2008. Freemasonry is a world-wide fraternity dedicated to the brotherhood of man with the belief in a supreme being. REUTERS/Regis Duvignau (FRANCE) 

French Freemason members join hands during a Lodge meeting in Bordeaux, southwestern France on March 27, 2008. Freemasonry is a world-wide fraternity dedicated to the brotherhood of man with the belief in a supreme being. REUTERS/Regis Duvignau (FRANCE) 

French Freemason members join hands during a Lodge meeting in Bordeaux, southwestern France on March 27, 2008. Freemasonry is a world-wide fraternity dedicated to the brotherhood of man with the belief in a supreme being. REUTERS/Regis Duvignau (FRANCE) 

French Freemason members attend a Lodge meeting in Bordeaux, southwestern France on March 27, 2008. Freemasonry is a world-wide fraternity dedicated to the brotherhood of man with the belief in a supreme being. REUTERS/Regis Duvignau (FRANCE) 

French Freemason members attend a Lodge meeting in Bordeaux, southwestern France on March 27, 2008. Freemasonry is a world-wide fraternity dedicated to the brotherhood of man with the belief in a supreme being. REUTERS/Regis Duvignau (FRANCE) 

French Freemason members attend a Lodge meeting in Bordeaux, southwestern France on March 27, 2008. Freemasonry is a world-wide fraternity dedicated to the brotherhood of man with the belief in a supreme being. REUTERS/Regis Duvignau (FRANCE)