The Sapphire of Souls is a gemstone that Louie finds among Scrooge's treasure in "Sky the Sky!". According to Webby, it reveals one's heart's deepest, darkest desire. Louie talks to his reflection in the Sapphire, but even the reflection is horrified by Louie's greed. At the end of the episode, it is revealed that Webby lied to Louie: the Sapphire is just a cheap gemstone made in Macaw, and the talking reflection was just Louie's imagination.

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