* CrowningMoment Of Funny: All of Drusilla Clack's narrative. Apparently even Collins thought so; he wrote those passages out during a ''very'' dark period in his life, and writing them out cheered him up enough to keep going.
** A subtler one occurs when Ezra Jennings [[SwitchingPOV as the narrator]] meets Gabriel Betteridge. The delightful OldRetainer of past chapters becomes a proto-{{Otaku}} for RobinsonCrusoe!
* FairForItsDay: Although all of the protagonists describe the Hindu priests who have tracked the Moonstone down as exotic, frightening, and untrustworthy, Collins still presents their claim to the Moonstone as true and valid, and [[spoiler: its eventual return to them]] is shown as the setting right of an old wrong.
* [[HoYay Les Yay]]: There's a very strong connection between Rosanna Spearman and Limping Lucy. It seems especially pronounced on Lucy's side - she talks about how she and Rosanna were going to move to the city and "live like sisters," calls Rosanna "my darling".
* TheScrappy: Mrs. Clack. Her HolierThanThou attitude can be just a bit too close to real life for some readers.
* TheWoobie: [[BrokenBird Rosanna Spearman]] and [[YourDaysAreNumbered Ezra Jennings.]]
* ValuesDissonance: The way Betteridge describes the treatment of his (shrewish and contrary) late wife.
** Also the depiction of the Brahmin priests.