Sapphire Noble Books

Bold Voices. Remarkable Stories.

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.

Have a completed or substantially developed manuscript? We invite you to submit your work for consideration.

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 & Suspense

Compelling stories filled with tension, intrigue, unanswered questions, and unforgettable characters. We seek manuscripts that keep readers invested and turning pages.

Literary & Contemporary Fiction

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

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, or provide readers with meaningful insight and practical guidance.

Biography & Memoir

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

Devotionals & Faith-Centered Works

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

We do not currently accept erotica or politically themed manuscripts.

You Wrote the Manuscript. What Comes Next?

Finishing a manuscript is a major accomplishment.

Knowing how to professionally develop, publish, position, and distribute that manuscript is an entirely different process.

That is where we come in.

Sapphire Noble Books works collaboratively with accepted authors throughout the publishing journey. Depending on the needs of the project, the publishing process include professional editing guidance, 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 worldwide distribution.

Our goal is not simply to make your book available.

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

A Selective Publishing Experience

We do not accept every manuscript submitted.

Each project is reviewed for editorial quality, audience clarity, 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 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.

Your manuscript is written. Let’s explore what comes next.

SUBMIT YOUR MANUSCRIPT