Gemstones · common
Ammolite
Ammolite is organic gemstone formed when it mixes with fossilized shell of extinct marine ammonite.
Ammolite properties at a glance
| Type | Gemstones |
|---|---|
| Mohs hardness | 7 |
| Luster | vitreous |
| Streak | White to light-colored |
| Fracture | Uneven to conchoidal |
| Specific gravity | 3 |
| Transparency | translucent |
| Common colors | Various |
| Rarity | common |
Geology & background
Forms through geological processes that produce durable, attractive mineral material suitable for cutting or collection.
Ammolite has been collected, traded, or displayed for its visual character, durability, and specimen appeal.
How to identify Ammolite
- Compare the specimen's color, luster, crystal habit, grain size, streak, and locality before confirming.
- Use multiple photos when possible, including a fresh surface and a close view of texture.
Full Ammolite identification guide: checklist, home tests and look-alikes →
Ammolite vs similar stones
Not sure it isn't something else? Side-by-side comparisons with the stones most often confused with Ammolite.
Where Ammolite is found
Reported from multiple localities worldwide; verify locality against specimen provenance when available.
How much is Ammolite worth?
| Entry-level specimen | $10 |
|---|---|
| Typical collector specimen | $75 |
| Premium specimen | $500+ |
Value depends on size, crystal quality, color, locality, rarity, damage, and provenance.
Common uses
- Jewelry
- Collector specimens
- Lapidary work
- Education
Interesting facts
- Ammolite is useful for field identification because texture, color, luster, and context can narrow the match.
- Specimens labeled Ammolite can vary by locality, weathering, impurities, and crystal or grain size.
- A fresh surface and multiple photos usually improve identification confidence.
Care & safety
Handle as a collector specimen until hardness, cleavage, and fracture are verified.
Avoid inhaling dust. Do not cut, grind, or polish unknown specimens without eye protection and a proper respirator.
Ammolite FAQ
What is Ammolite?
Ammolite is organic gemstone formed when it mixes with fossilized shell of extinct marine ammonite.
How much is Ammolite worth?
Entry-level Ammolite specimens sell for around $10, a typical collector specimen for about $75, and premium pieces for $500 or more. Value depends on size, crystal quality, color, locality, rarity, damage, and provenance.
How hard is Ammolite?
Ammolite has a Mohs hardness of 7. It scratches glass and a steel knife and cannot be scratched by a steel file.
What is Ammolite used for?
Ammolite is used for jewelry, collector specimens, lapidary work, and education.
