Queen Marie Amélie's emeralds were not inherited by the duc d'Aumale, but by princess Clementine. I have the distribution of Queen Marie-Amélie's jewels after her death somewhere (once again it comes from the private papers of the Orléans family, Archives Nationales). The duc d'Aumale received some pearls and rubies from his mother's estate.
However, he owned some very important jewels in emeralds, diamonds and pearls. They were the jewels he inherited from his wife. The emerald and diamond devant de Corsage he gave to his niece princess Amélie as a wedding present was from his wife's jewels, as was the necklace he gave to his other niece princes Helène she married the duke of Aosta.
And one last thing : There is something, a piece of jewelry obviously, that you may find interesting in next wednesday's issue of Point de Vue.