I should also mention that the famous picture of the corner cabinet was taken by Lukomsky during the war. Nicholas ordered the rooms to be photographed bacuse they thought at the time that they were going to have to evacuate Petrograd and he wanted a record of the palace rooms made so that they could be restored after the war if the Germans damaged them.
One can assume these were the eggs that Alexandra liked because she seldom - if ever - saw the collection at the Winter Palace. She must not have been very fond of them.
Also, she preferred the ones her children liked or those that has sentimental value to her. Remember she had no control over what the eggs looked like before she got them. Court officials made suggestions of colors or themes, but that was all.
Not all of the eggs in the AP were in the corner cabinet. She alos had some in her bedroom in cases by the window. I have never seen a photograpgh of these cabinets where you could make anything out. there were jewel cabinets in the Russian style. Noble women in Russia kept their jewelry in display cabinets in their bedrooms.