Princess Margaret’s mother-in-law, Countess of Rosse’s rare jewels go on sale for the first time: a look at the fascinating emeralds worn at three coronations

Princess Margaret with her mother-in-law, the sixth Countess of Rosse

An incredibly rare dragonfly brooch worn by Princess Margaret’s mother-in-law, the Countess of Rosse, will be sold for first time in history.

• A rare brooch belonging to Princess Margaret’s mother-in-law, the Countess of Rosse, will go on sale for the first time
• The brooch was made by the official court jewelers, Garrard and Co, and used emeralds which have been present for three different coronations
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