I have the book. It is lavish and the illustrations are beautiful. Some pictures are well known, others not so much. I do not know what the errors are, if there some, I paid no attention to them.
Personally, I think the book worthwhile addition, especially when it comes to Russian court jewelry. Another point, this is a large format book. So, the pictures, although familiar are much larger and you can see more detail.
The price may put some people off, but I pre-ordered from Amazon and it was not so bad.
Robert