What reading level is Crystals?

Crystals by Rebecca Faulkner is at a Level 4-5 reading level. Recommended for Middle Grades readers (Ages 9-12).

What age is Crystals appropriate for?

Crystals is recommended for Ages 9-12. HootRating: 9C (Clear).

What genre is Crystals?

Crystals is nonfiction — Juvenile Nonfiction. Part of the Raintree Freestyle Express; Geology Rocks! (Raintree) series.

Does Crystals have any content warnings?

Crystals has a HootRating of 9C (Clear). No specific content flags noted. On HootRated, every book is rated across four dimensions — emotional, physical, social, and thematic — to help parents make informed choices.

How many pages is Crystals?

Crystals by Rebecca Faulkner is 56 pages (approximately 3,684 words).

Reviewed by HootRated editorial · Last updated May 18, 2026

Crystals

Rebecca Faulkner

Crystals

Age Rating, Reading Level & Content Guide

by Rebecca Faulkner

Raintree Freestyle Express; Geology Rocks! (Raintree)

Reading Level 4-5 9C Ages 9-12 Balanced Read Page-Turner

The text is written at a 4th grade reading level, the subject matter is intended for middle graders (ages 9–12), and the content is gentle with no concerning themes.

Buy on Amazon Listen on Audible

We may earn a commission from these links. Bookshop.org supports independent bookstores with every purchase.

About This Book

Discover the fascinating world of crystals, from their formation deep within the Earth to their amazing shapes under a microscope. Explore how crystals grow, break, and the many ways we use them every day. Perfect for curious young scientists eager to learn about the wonders of rocks and minerals.

Themes

Science & NatureCrystallographyRocks

Quick Assessment

This is a Level 4-5 book with gentle content intensity. No notable content concerns flagged. Written for readers ages 9-12.

Why we rated Crystals 9C

Crystals is written at a Level 4-5 reading level across 56 pages (approximately 3,684 words). Strong independent readers around grade 5.3 can typically handle this book on their own; with parent or teacher support, Crystals works for readers up to grade 6.3.

Read aloud, Crystals takes about 25 minutes, which fits within a single read-aloud session.

We rate Crystals as 9C ("Clear") because the content sits in the "Gentle" range — no conflict beyond everyday childhood experiences. Across our four dimensions (emotional, physical, social, thematic) the book reads as evenly gentle; no single dimension stands out as a concern.

No specific content flags were raised by community reviewers, which is consistent with the gentle intensity score.

Thematically, Crystals explores science & nature, crystallography, and rocks — these threads give the book room to mean different things to different readers.

Good fit for

✓ Children in the Ages 9-12 range — the maturity and attention span match the story's pacing.
✓ Reluctant readers who need fast-paced, hook-heavy stories to stay engaged.
✓ Kids drawn to stories about science & nature, crystallography, rocks.
✓ Curious kids who prefer real-world topics over made-up stories.

Maybe not for

! Readers whose emotional readiness lags behind their decoding skills — this book's intensity outruns its reading level, a classic "gifted kid" mismatch.