The titular "Finder's Stone" is a magical artifact created by the bardFinder Wyvernspur, an orange gem with a core of para-elemental ice. The stone has two main functions; the ability to guide its possessor to a desired object using a beam of light, and the ability to project an illusory image of Finder performing his songs. This latter function was actually the stone's primary purpose, as Finder had become obsessed with ensuring that his works endured beyond his death.
The stone is present in all three books, though it is not central to the plot. It was ultimately destroyed by Finder when he extracted the sliver of para-elemental ice and used it to slay the god Moander.
Jeff Grubb stated that Azure Bonds is one of his favourite novels that he has written.