Marie Antoinette owned this little heart-shaped 5,34 carat blue diamond set in a golden ring. When Marie Antoinette knew that she would not be able to protect the precious jewels from the robbing, revolutionary mobs she quickly gave it to her friend, Princess Lobomiska of Poland. The diamond ring is has never left Europe but is not on display because it now belongs to a private collector.
The ring was a part of Marie Antoinette's personal jewellery collection and as such she probably brought it with her from Vienna. Because it was her's alone, it was not counted among the crown jewels of France.