Thank you, Dru! It's both interesting and frustrating to think about why a few of the famous formal photos are online in massive sizes but others like Tatiana's 1913 photos, despite the relative frequency with which they show up on royal sites, I'd never before seen in the kind of good quality that would make the details clear.
Also - for the first time I can see her necklace well. Interesting piece!
The necklace didn't stand out in smaller photos, but here it looks fascinatingly unusual.