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Affiliated Companies
Through a network of affiliated companies, Gemstone Comics is at the center of pop culture merchandise and production. From games to toys to preservation materials to price guides and more, Gemstone and its associated companies stand ready to meet your collecting and hobby needs.

Visit the following companies for more information about their products and services.


Alliance Game Distributors
Alliance offers the largest selection of Hobby Games products of any distributor in the US -a full line distributor with an extensive selection of Role-playing Games, Collectible Card Games, Miniature Games, Anime, Board Games, Brushes, Paints, Dice, and Hobby Accessories. With over 30 dedicated sales reps whose singular goal is to help your store succeed, and a completely integrated preorder, ordering and warehouse system with direct access to live inventory and backfill capability at their disposal, you can be assured that your order will be handled with precision and care to detail.


Diamond Book Distributors
In 2002, Diamond Comic Distributors - the world’s largest distributor of English-language comic books - spun off its book trade efforts into a new division: Diamond Book Distributors (DBD). DBD is dedicated to serving the needs of the book trade, with a team of seasoned professionals in sales and marketing, as well as the Diamond Comic Distributors reputation and infrastructure to bring its plans to fruition. DBD sells to a variety of sources, including Barnes & Noble, Ingram, Baker & Taylor, WaldenBooks, Amazon.com, Borders, and more, offering a vast array of high-quality graphic novels, gaming products, and trading cards from some of the top publishers and creators in the business.


Diamond International Galleries
Since its opening in 1995, Diamond International Galleries has regularly been at the heart of many significant opportunities to preserve, promote and present historical comic character collectibles, and enjoys its position as the preeminent display house of such items.

Alongside original classic comic books, movie posters, premiums and other toys, original works by such artists as Carl Barks, Gustav Tengren, Alex Ross, Murphy Anderson, Joe Shuster, Joe Simon and Charles Schulz, among others, are on display.

Whether assisting in such projects as DC’s Archive series, or hosting industry and other events, the Gallery staff is highly active and influential in numerous areas of collecting. Gallery personnel have served as reference sources for the mainstream media, and they have also contributed significantly to an increased awareness of comic character collectibles by writing articles, and contributing information and advice to a wide array of periodicals and price guides from different publishers.

Since its inception, Diamond International Galleries has also booked numerous record sales of individual collectibles.


Diamond Select Toys & Collectibles
Founded in 1999, Diamond Select Toys and Collectibles, LLC creates unique and exciting collectibles for children and adults alike. The company holds licenses for a variety of top-rated pop culture properties, including characters from Marvel Comics, Battle of the Planets, Edward Scissorhands, and many more.


Diamond UK
As Diamond Comic Distributors’ British counterpart, the London, England-based Diamond UK works closely with overseas comics retailers to bring the hottest comic books and related merchandise to fans throughout the United Kingdom and Europe.


E. Gerber Products, LLC
E. Gerber Products, LLC was started by the late Ernst Gerber in 1977 after he developed the first and only edge sealing Mylar® process, a process that was then patented. The company's patented equipment has been sold worldwide and is used by organizations such as the Library of Congress and the Comic Conservation Company. Other firsts for E. Gerber Products, LLC include offering the first acid-free boxes and acid-free backing boards to collectors and publishing the respected Photo Journal Guide to Comics. The company is known to collectors and archivists around the world for its high quality storage and preservation products, including several varieties of Mylar® bags and sleeves, custom backing boards, archival tape, and acid-free storage boxes.


Game Trade Magazine
Game Trade Magazine is the gaming industry's leading consumer preorder guide, published by Alliance. Each issue is filled with adventures, fiction, and product previews from industry icons, and features the Alliance Preorder Guide – an informative catalog offering advance solicitations, complete with descriptions and images, for items releasing in the next few months. GTM provides the perfect opportunity for stores to learn about upcoming products, and to inform their customers of future product before the store’s orders are due.


Gemstone Publishing
Best known as the home of The Overstreet Comic Book Price Guide, Gemstone Publishing 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. Most recently, Gemstone and Disney Publishing Worldwide announced plans to publish Disney Comic Books featuring many of the beloved characters that had not appeared on comics shop shelves for years, including Mickey Mouse, Minnie Mouse, Donald Duck, Goofy, and others.

Furthermore, Gemstone separately acquired Russ Cochran Publisher and Overstreet Publications, which brought with them The Complete EC Library and the noted line of price guides, respectively. As a result, Gemstone also publishes The Overstreet Comic Book Grading Guide, The Big Big Overstreet Comic Book Price Guide, Hake’s Price Guide to Character Toys, The Overstreet Toy Ring Price Guide, and The Overstreet Indian Arrowheads Identification and Price Guide, and co-published Tales of Terror! - The EC Companion with Fantagraphics Books.

In addition to these projects, Gemstone publishes Comic Book Marketplace, a monthly magazine for comic book collectors. In 2002, Gemstone added Scoop, a free, weekly information e-mail newsletter, to its list of popular publications.