Many of the UK papers carried the same report as the New Zealand paper. The Daily Telegraph, as indicated in the NZ paper, had the same item.



For those who don't want to read the small print, the report is almost identical to the one in the link Kongetro gave above.

So far I have not found reports from other occasions during the coronation festivities in 1937 where Princess Olga was reported to have worn emeralds.

I doubt if any photos of Princess Olga dressed for this court ball will be found in the press, as she, along with others, stayed at Buckingham Palace during the coronation period.



For the coronation ball at the Albert Hall in May 1937, Princess Olga wore her large diamond tiara.



I wonder if it is possible that, for the court ball at Buckingham Palace on 14 May 1937, Princess Olga borrowed the Greek emeralds? But would that account for the report of the necklace?

The other possibility is that the report has a mistake and that Crown Princess Martha's emeralds were the subject of the comment.