Walking sticks with silver knobs are on display at Silber Sturm, a traditional silverware shop in Vienna, Austria, January 15, 2018. REUTERS/Heinz-Peter Bader

Silver rings are worn by a man speaking on his mobile phone in Peshawar, Pakistan January 17, 2018.

A piece of silver is melted to make a ring in Soledad Borel's workshop in San Jose, Costa Rica, January 18, 2018.

Silver products are pictured in a second-hand silverware shop in Bordeaux, France, January 25, 2018.

A vendor shows silver shoes for sale in the market in Peshawar, Pakistan January 15, 2017.

A man works on a silver ring at a workshop in Islamabad, Pakistan January 16, 2018.

A woman polishes silver cutlery at her home in Valletta, Malta, January 18, 2018.

Master silversmith Geoffrey Blake, who began as a silversmith in the 1970's, forges a sterling silver, handwrought Place Spoon in the workshop at Old Newbury Crafters in Amesbury, Massachusetts, U.S., January 19, 2018.

An Egyptian seller checks silver rings on display at a jewellery shop in a market in Cairo, Egypt, January 21, 2018.

An Egyptian seller checks silver rings on display at a jewellery shop in a market in Cairo, Egypt, January 21, 2018.

Silver products are pictured in a second-hand silverware shop in Bordeaux, France, January 25, 2018.

An Arabic silver pot is seen for sale at an antique store in Islamabad, Pakistan January 16, 2018.

Silver cutlery is seen stored in a drawer at a private home in Valletta, Malta, January 18, 2018.

Silver products are pictured in a second-hand silverware shop in Bordeaux, France, January 25, 2018.

A man shows a Mexican 5 Pesos Hidalgo silver coin at currency exchange shop in Ciudad Juarez, Mexico January 15, 2018.

Silver jewellery parts and work tools are seen in the workshop of goldsmith Gavriel Touboul in Jerusalem January 17, 2018.

Master silversmith Geoffrey Blake anneals sterling silver being forged into a handwrought Place Spoon at Old Newbury Crafters in Amesbury, Massachusetts, U.S., January 19, 2018.

Silver plated cutlery is seen for sale at an antique store in Islamabad, Pakistan January 16, 2018.

A woman polishes an antique silver candelabra at her home in Valletta, Malta, January 18, 2018.

Flatware patters hang in front of Master silversmith Geoffrey Blake, who began as a silversmith in the 1970's, as he forges a handwrought, sterling silver Place Spoon at Old Newbury Crafters in Amesbury, Massachusetts, U.S., January 19, 2018.

A salesman holds a magnifying class to show the brand on a silver plated Maupin and Webb teapot for sale at an antique store in Islamabad, Pakistan January 16, 2018.

A silver ingot prepared by goldsmith Gavriel Touboul out of pieces of used silver is seen in his workshop in Jerusalem January 17, 2018.

Soledad Borel welds a silver ring in her workshop in San Jose, Costa Rica, January 18, 2018.

Silver products are pictured in a second-hand silverware shop in Bordeaux, France, January 25, 2018.