The pieces in this tray are all pieces it would be logical for the Queen to wear in one night.
Thus I agree with Dmitry´s suggestion that this is merely how the dresser brings the pieces to her Majesty when she is dressing for a single night - instead of carrying 7-8 separate boxes.
--Previous Message-- : : I agree that it makes sense that the tray is : merely a "basket" for conveying a : number of pieces. : But perhap not. It does have a soft cover! : : The modern staff might have : "modern" habits. : : : --Previous Message-- : Makes sense. : : : --Previous Message-- : I would suggest that the sapphires are not : stored thus; they are brought to Her Majesty : in this manner. They will be stored in : their proper fitted cases to ensure that : there is minimal damange to them. This is : merely an easier means of bringing to the : Queen the jewels that she has selected. : : :