

"Un écrin velours bleu ciel (Hübner) avec bague gros rubis entouré de diamants. C'est ma bague de fiançailles".
[A baby blue velvet case (Hübner) with a ring set with a large ruby framed with diamonds. This is my engagement ring].
Excerpt from the inventory of Archduchess Marie Anne of Austria, Princess Elie de Bourbon Parme