The Diamond of Darkhold

Lina and Doon are returning to the city of Ember, but what awaits them in the dark? This highly acclaimed adventure series is a modern-day classic—with over 4 MILLION copies sold!
 
Lina and Doon escaped the dying city of Ember and led their people to the town of Sparks. But it’s winter now, and the harsh realities of their new world have begun to set in. When Doon finds a book that hints at an important, long-lost device, it doesn’t take much for him to convince Lina to join him for one last adventure in the place they used to call home. But will this mysterious technology be enough to help their people? And what— and who—will they find when they return? 

Praise for the City of Ember books:
 
Nominated to 28 State Award Lists!
An American Library Association Notable Children’s Book
A New York Public Library 100 Titles for Reading and Sharing Selection
A Kirkus Reviews Editors’ Choice
A Child Magazine Best Children’s Book
A Mark Twain Award Winner
A William Allen White Children’s Book Award Winner
 
“A realistic post-apocalyptic world. DuPrau’s book leaves Doon and Lina on the verge of undiscovered country and readers wanting more.” —USA Today
 
“An electric debut.” —Publishers Weekly, Starred
 
“While Ember is colorless and dark, the book itself is rich with description.” —VOYA, Starred
 
“A harrowing journey into the unknown, and cryptic messages for readers to decipher.” —Kirkus Reviews, Starred

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Standard and Primary covers are widely available through general retailers. They often have higher print runs and can be cheaper, especially during sales.

In contrast, Direct Market (DM) and variant covers are primarily sold in comic shops. DM editions tend to have more limited availability and may be more valuable to collectors.

The main differences lie in artwork style, availability, price, and collector appeal. Ultimately, the choice between standard and variant covers depends on personal preference, budget, and individual collecting goals.

Comic book enthusiasts have various formats to choose from when collecting their favorite stories.
Here's a brief overview of the main types:

Omnibus

• Large, hardcover collections
• Usually contain complete runs or extensive story arcs
• Typically 800-1000+ pages
• Higher price point, often €100-€150

Oversized Hardcover (OHC)

• Similar dimensions to omnibus, but thinner
• Collect shorter runs or story arcs
• Usually 300-600 pages
• Priced between €30-€50

Hardcover (HC)

• Standard-sized hardcover books
• Collect 6-12 issues typically
• Similar dimensions to single issues, but with a hard cover
• Priced around €25-€35

Trade Paperback (TP)

• Softcover collections
• Standard comic book size
• Usually collect 4-6 issues
• Most affordable option, typically €15-€25

Other Formats

• Absolute Editions: Oversized, deluxe hardcovers (mainly DC Comics)
• Compendiums: Massive paperback collections
• Graphic Novels (OGN/GN): Original stories not previously released as single issues

The choice between these formats often depends on personal preference, budget, and collecting goals. Omnibus and OHC editions offer larger artwork and more content but at a higher price, while TPs provide a more affordable way to collect complete story arcs