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Gemstone Publishing

Gemstone Publishing



Best known as the home of The Overstreet Comic Book Price Guide, Gemstone Publishing, a division of Geppi's Entertainment Publishing & Auctions, was formed by Diamond Comic Distributors President and Chief Executive Officer Stephen A. Geppi as a conduit for his efforts in preserving and promoting the history of the comics medium.

Gemstone's product line also includes recurring publications such as The Big Big Overstreet Comic Book Price Guide, Overstreet's Comic Book Marketplace Yearbook, The Official Price Guide to Pop Culture: 150 Years of Character Toys & Collectibles, and a variety of special editions such as The Overstreet Guide to Grading Comics, The Overstreet Guide to Collecting Comics, and The Overstreet Guide to Collecting Comic and Animation Art.


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