Crystal Keepers
by Brandon Mull
Age rating: Ages 10–14 · Children
Age rating and Christian content guidance for parents.
First published 2001
Four siblings discover a hidden world and must use magical crystals to protect it from an evil sorcerer.
Concern Level
Heavy
Virtue Level
Thin
Concern Level
Heavy
Virtue Level
Thin
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Dokilit is an AI-powered content guide for Christian parents. We analyse books through the lens of faith and family, then show you the concerns, the virtues, and the conversation points that matter for your home.
Things to consider
Higher = more presentNo sexual content is present in the book.
Mild peril and conflict occur during magical battles.
No profanity is used in the story.
No blasphemous content is included.
No substance abuse is depicted.
No suicide or self-harm is present.
The antagonist and some magical threats can be mildly scary.
The story heavily features magic, crystals, and a sorcerer.
No LGBTQ+ themes are present.
The worldview is primarily fantasy-based with magical systems.
No negative portrayals of God or Christians are present.
Virtues to celebrate
Higher = stronger presenceThe siblings demonstrate courage facing magical dangers.
No explicit Christian faith elements are present.
Sibling bonds and loyalty are shown.
No themes of grace, mercy, or repentance are central.
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