The heart of Gemstone Publishing's roster of price guides and reference books is the Overstreet Comic Book Price Guide. Robert M. Overstreet changed the comic book collecting world with the release of the first edition of the Comic Book Price Guide in 1970. 

Over 2 decades later, in 1994, Overstreet sold his publishing empire to Steve Geppi of Diamond Comic Distributors, who made the Overstreet Comic Book Price Guide and Overstreet Publications the core of his new company called Gemstone Publishing. Since that time, a myriad of new reference books and price guides on comic books and other pop culture collectibles have been released under the Gemstone brand.

All of the various books found in this section are original, uncirculated copies from our warehouse, and are available in extremely limited quantities.

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