News Billionaire David H. Koch, Right-Wing Activist and Philanthropist, Has Died at 79 Koch was a trustee of the Metropolitan Museum of Art and the Lincoln Center in New York, donating tens of millions to them. By Annie Armstrong Aug 23, 2019 9:51 am
RobbReport A Vivid Pink Diamond and a Giant Ruby Both Sold for a Record $35 Million at Sotheby’s Jewelry Auction