Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Plodding and disappointing

I rather liked the historical details and information about jewels that were worked into the story, but like other reviewers I found the characters cold, distant and not compelling. Katherine, the protagonist, suffers from the malady that ruins so many novels nowadays -- she's a self-involved narcissist whose obsessions are meaningless. The only remotely likable character is Daniel, and he suffers from another common character malady: he does little except question why he does so little. The quest is a snore, although there are a few highlights along the way; the "insights" and requisite quirky characters held little meaning for me.