Sapphire Noble Books

Powerful Stories. Distinctive Voices. Books Written for Life Beyond Childhood.

Sapphire Noble Books is the adult publishing imprint of Purple Diamond Press Inc., created for authors whose stories explore the depth, complexity, imagination, and experiences of adult life.

We publish select fiction and nonfiction across carefully defined genres, partnering with authors to professionally develop, position, and distribute books created for clearly identified readers.

We are selective and curated—not a volume-based publishing operation.

Apply For Consideration

Where Powerful Stories Find Their Readers

Some stories entertain us.

Some challenge the way we think.

Some help us understand an experience we have never lived.

Others give language to the experiences we know all too well.

At Sapphire Noble Books, we believe compelling adult literature begins with a distinctive voice and a clear reason for the story to exist.

Our role is to help authors strengthen that vision and prepare their work for publication through professional book development, thoughtful market positioning, and distribution.

What We Publish

Mystery & Thriller

Suspenseful, compelling stories that keep readers questioning, investigating, and turning pages.

Literary Fiction

Character-driven narratives that explore relationships, identity, culture, human experiences, and the complexities of life.

Fantasy & Science Fiction

Imaginative worlds, speculative ideas, and original stories that invite readers beyond the boundaries of the familiar.

Self-Help & Nonfiction

Purpose-driven books that educate, inform, encourage growth, and provide readers with meaningful insight or practical guidance.

Biography & Memoir

Powerful true stories centered on lived experience, personal journeys, resilience, achievement, transformation, and legacy.

Devotionals

Thoughtful faith-centered works created to encourage reflection, spiritual growth, and meaningful connection.

We do not currently accept erotica or politically themed manuscripts.

More Than Book Production

Publishing a book requires more than placing words on a page.

Sapphire Noble Books works collaboratively with accepted authors throughout the professional publishing process.

Depending on the needs of the project, our publishing process includes professional editing, cover and interior development, ISBN and publishing preparation, distribution, release planning, market positioning, and ongoing marketing collaboration.

Every book published by Purple Diamond Press Inc. receives distribution.

Our goal is not simply to make your book available.

We work to help position your book for the readers it was written to reach.

A Selective Publishing Experience

Each project is reviewed for editorial quality, audience, market potential, genre alignment, and fit within the Sapphire Noble Books catalog.

Our selective approach allows us to devote meaningful attention to the authors and books we choose to publish.

We welcome both first-time and experienced authors who are serious about developing their manuscripts and actively participating in the publishing and marketing process.

Your Story. Professionally Developed.

Authors maintain meaningful creative input throughout the publishing process.

Our team provides professional guidance in editing, design, production, market positioning, distribution, and launch planning while respecting the vision at the heart of each manuscript.

Publishing is collaborative.

We believe the strongest books are developed when author vision and publishing expertise work together.

Is Sapphire Noble Books Right for Your Manuscript?

You may be a strong fit if:

  • You have completed or substantially developed your manuscript.
  • Your work aligns with one of our accepted adult genres.
  • You are open to professional editorial guidance.
  • You understand that authors play an active role in building their readership.
  • You are looking for a publishing partner—not simply a book production service.

If this sounds like the publishing experience you are seeking, we invite you to submit your manuscript for consideration.