Possesses a charm which triggers if read by anyone other than Topaz, which will leave magical ink stains on their hands which have to be removed with a potion.
A letter is pinned to the inside cover, folded so that the first two paragraphs are visible when the diary is opened:
23rd October, 1887T.,
It is hard sometimes. We all find it hard sometimes. It can be frustrating and exhausting and the sort of things A likes to say are things I can hear just as well from that voice at the back of my mind on a bad day, the one telling you that you might as well give up. The point is, you have to choose - consciously, sometimes - not to listen. (And don't listen to A too much either.)
Because progress is progress, however slow or little it may seem. Nothing has happened as fast as it should have, or could have, so at a glance it looks like we're trapped in a government that's entirely stagnated, that the power just gets passed back and forth between those rich old men. But I promise you that we're not: I promise you that things are changing. Sometimes you just have to look backwards to see how far we've come already, look at things on a wider scale.
pinned my hopes to the summit of someday

Magnolia