I used the portrait in my book, and the informations I got from The Royal collection said that Queen Louise is wearing an emerald and diamond tiara which must refer to the one on the Danish crown jewels. The painting is dated 1964 the same year that the Queen got the crown jewels brought to her at Amalienborg from Rosenborg so I think the necklace and earrings must be the well-known diamond demi-parure, while the brooch must be the grand bouquet - both from the crown jewels. So August Schiøtt's is actually the earliest knwn portrait of QL showing her with the crown jewels.