The rare square 37-carat emerald is the world's most expensive green stone. A rare square 37-carat emerald owned by the Aga Khan fetched nearly $9 million at auction in Geneva on Tuesday, making it ...
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 ...
GENEVA, Nov 13 — A rare square 37-carat emerald owned by the Aga Khan fetched nearly nine million dollars at auction in Geneva on Tuesday, making it the world’s most expensive green stone. Sold by ...