
Aga Khan emerald, world's most expensive green stone, fetches record $9 million at auction
CBSN
A rare square 37-carat emerald owned by the Aga Khan fetched nearly $9 million at auction in Geneva on Tuesday, making it the world's most expensive green stone.
Sold by Christie's, the Cartier diamond and emerald brooch, which can also be worn as a pendant, dethrones a piece of jewelry made by the fashion house Bulgari, which Richard Burton gave as a wedding gift to fellow actor Elizabeth Taylor, as the most precious emerald.
In 1960, Prince Sadruddin Aga Khan commissioned Cartier to set the emerald in a brooch with 20 marquise-cut diamonds for British socialite Nina Dyer, to whom he was briefly married.

Russia has released Ksenia Karelina, a dual U.S.-Russian national who was sentenced to 12 years in prison for treason in August last year, U.S. Secretary of State Marco Rubio said in a social media post early Thursday, offering no information about the terms of her release. The Wall Street Journal first reported Karelina's release, saying she was freed in a prisoner swap orchestrated by the two countries' intelligence agencies.

London — The British government's broadcasting regulator Ofcom announced Wednesday that it is investigating an online suicide forum reportedly linked to 50 deaths in the U.K. Ofcom said it was using new powers granted under British law to look into whether the site's service provider had "failed to put appropriate safety measures in place to protect its U.K. users from illegal content and activity."