KDP categories · Top KDP authors
Valen Stone: Amazon KDP author data
As of Nov 6, 2026, Valen Stone has 12 books on Amazon, 12 of them on a best-seller list in the last 30 days (best rank #5), mostly in Geology, Rocks & Minerals, Mineralogy.
| Median price | $9.99 |
|---|---|
| Price range (middle 50%) | $7.49 – $19.49 |
| Median reviews | 4 |
| Total reviews | 24 |
| New books (30 days) | 1 |
| Breakout books (30 days) | 0 |
What stands out
- 100% of the catalog made a best-seller list in the last 30 days: the whole backlist sells, not one hit.
Valen Stone's best-ranked books
-
How to Spot a Real Gemstone: Avoid Fake Gems in Seconds — A Practical 60-Second Identification System Using Light, Inclusions, Weight & Simple Tests Even ... Identification Field Guide Series Book 5)
by Valen Stone
- Price$5.99
- Rating5.0
- Reviews1
-
READ ANY SOIL IN 30 SECONDS: Field-Proven Methods to Understand Soil, Fix Problems Fast, and Grow Better — Without Tools or Lab Tests (Rock Identification Field Guide Series Book 4)
by Valen Stone
- Price$5.99
- Reviews-
-
Identify any rock in seconds: A Practical Field Guide for Beginners — Fast & Easy Rock Identification Without Tools (Rock Identification Field Guide Series Book 1)
by Valen Stone
- Price$9.99
- Rating3.3
- Reviews5
-
Identify Precious Gems in 60 Seconds: A Fast and Practical Field Guide to Spot Real Gemstones Instantly — Even Without Experience (Rock Identification Field Guide Series Book 3)
by Valen Stone
- Price$6.99
- Rating3.6
- Reviews4
-
Mineral Identification Field Guide: Identify Minerals in Seconds — Even Without Experience Fast & Proven Methods for Real Outdoor Identification (Rock Identification Field Guide Series)
by Valen Stone
- Price$16.99
- Rating3.4
- Reviews3
-
How to Spot a Real Gemstone: Avoid Fake Gems in Seconds — A Practical 60-Second Identification System Using Light, Inclusions, Weight & Simple Tests ... (Rock Identification Field Guide Series)
by Valen Stone
- Price$19.99
- Rating5.0
- Reviews1
-
Landslides & Ground Stability: A Practical Geology Field Guide to Recognize Unstable Slopes, Prevent Property Damage, and Make Safer Land Decisions (Rock Identification Field Guide Series)
by Valen Stone
- Price$22.99
- Reviews-
-
ROCK IDENTIFICATION FIELD GUIDE: Recognize Rocks Quickly While Hiking A Practical Outdoor Geology Handbook for Hikers, Students and Nature Enthusiasts
by Valen Stone
- Price$18.99
- Rating3.3
- Reviews5
-
How to Read a Geological Map: Understand Landscapes, Terrain, Rivers, Mountains, and Geological Structures (Rock Identification Field Guide Series Book 8)
by Valen Stone
- Price$7.99
- Reviews-
-
GeoResources: Learn to Read the Land, Recognize Geological Value, and Understand Where Rocks, Minerals, Gemstones, and Critical Resources Form (Rock Identification Field Guide Series)
by Valen Stone
- Price$21.99
- Reviews-
Main categories
FAQ
How many books does Valen Stone have on Amazon?
KDPTop tracks 12 of their books; 12 made an Amazon list in the last 30 days.
Which categories does Valen Stone publish in?
Their books chart most often in Geology, Rocks & Minerals, Mineralogy.
How does Valen Stone price their books?
The median price is $9.99; half of the books cost $7.49–$19.49.
Has Valen Stone released new books recently?
1 new book in the last 30 days.
About this data
Data comes from KDPTop's daily crawl of Amazon's public Best Sellers pages; medians use the latest list. The opportunity score (0–100, higher is easier to enter) combines the review barrier, the share of low-review books, list turnover, new-release share and price.