An entire planet full of treasure?

[Impossible not to notice the wistful look that crosses Temeraire's face and the longing note in his voice, both of which are immediately replaced with alarm as Amelia reveals its fate. He stares at her in open dismay, the questions about navies and Laurence momentarily forgotten.]

I should think it matters a great deal: surely you can find it again, if it has been lost; it would be terribly careless of you otherwise. Was it very beautiful?