Aga Khan emerald, world's most expensive green stone, fetches record $9 million at auction
A rare square 37-carat emerald owned by the Aga Khan fetched nearly $9 million at auction in Geneva on Tuesday, making it the ...
Daily Mail3d
World's most expensive green stone sells for an eye-watering £7million more than 60 years after it was gifted to a British socialite
A rare square 37-carat emerald owned by the Aga Khan has fetched nearly $9million (£7million) at auction in Geneva, making it the world's most expensive green stone. The Cartier diamond and ...