Prince_Lieven,I have to add a "slight" correction.During the time that Anna's spouse was still Prince of Orange and they lived in Brussels part of the year,as the whole Court did,jewellery was "stolen".The circumstances have never been cleared upto this present day.Many rumoured her husband was behind the disappearance of a large part of the collection,to pay off his debts,but there was no prove for that accusation.
After that happened,Anna wrote a letter to her dear mama,simply requesting new stones to be send to her,as happened.Indeed,the Romanovs had bucket loads of it.There are still many stones,coming from parures that have been broken up over the ages or have never been "used" still.Really,the British Crown Jewels are famous,as are those of the Danish Royal House,but the House of Orange can easily stand up next to them.
One of these stones,allthough not related to Anna,is the Stuart Diamond,once adorned the Crown parure during Queen Emma's and Queen Wilhelmina's reigns,but not seen since over 40 years.Such a darn pity,it's not just a stone,it's a rock.Same for the 163 carat saphire of the Family,hardly ever on show if ever.Maybe,in due time Princess Máxima will put it to use again once Queen.