Your guide to spotting valuable and authentic pieces of ancient history
Collecting fossils is more than a hobby—It’s a gateway to Earth’s prehistoric past. Whether you’re an enthusiastic beginner or a seasoned paleontology buff, knowing what to look for can help you build a collection that is scientifically fascinating, visually striking, and potentially a great investment. Here’s a list of essential things to consider when collecting fossils.

1. Authenticity
As a highly reputable, third-generation family business and dealer of fossils, minerals, and
meteorites and a well-known name in the industry, all of Astro West’s fossils have been
authenticated and come with genuine Certificates of Authenticity.
2. Preservation Quality
Is the fossil complete? Are the fine details (like tooth ridges or leaf veins) visible? Fossils that
are fully or mostly intact – especially those with little to no restoration – hold greater appeal and
value – like our Nanotyrannosaurus Lancensis Tooth with well-preserved sharp serrations.
Cracked or broken fossils can still be significant, but condition affects display quality and resale.
3. Preparation
Fossils with clean, professional preparation are more desirable. Be cautious with overly polished
or artificially enhanced fossils, which may reduce natural value. Astro West’s trilobites are all
uniquely expertly prepared – like the museum-level preparation of our Crotacephalina Trilobite
From Morocco with its detailed spination.
4. Species Rarity
Some fossils, like ammonites or trilobites, are common (and make excellent starter fossils),
while others, such as raptor claws (or ribs – like our Raptor Rib Fossil in Matrix) or giant
sea scorpions (eurypterids), are rare and highly collectible. Learning the rarity of a species can
help you prioritize acquisitions that make your collection stand out.
5. Aesthetic Appeal
Collectors often seek fossils that are visually striking. Look for symmetry, contrast between
fossil and matrix, or interesting arrangements (e.g., a fish eating another fish). Also, patina and
mineralization on the surface of bone and completeness. Our excellent starter fossil T. Rex Limb
Bone Fragment displays excellent mineralization and a beautiful natural patina. Aesthetics can
influence a fossil’s display value just as much as its scientific worth.

6. Scientific Significance
Some fossils offer insights into evolution, behavior, or extinction events. For example, a
dinosaur feather imprint, a fossil with preserved stomach contents, or trace fossils like
footprints or burrows can hold more scientific weight than a standard bone fragment.
7. Geological Context
The location and rock layer where the fossil was found matter. Fossils from famous formations
like the Green River Formation (USA) (our fish fossils hail from the Green River Formation
and make truly unique wall hangings) or Solnhofen Limestone (Germany) are often more
valuable and well-preserved. Knowing the provenance can also help confirm authenticity.
8. Personal Connection
Don’t overlook the emotional or educational connection. Fossils that spark curiosity, tell a story,
or simply amaze you are just as important as those with scientific significance. Whether it’s your
first trilobite or a rare mosasaur tooth, the best fossils are the ones that inspire.
9. Investment Potential
Fossils are gaining recognition as valuable alternative assets. Rare, well-preserved
specimens—like Astro West’s dinosaur bones or our amber with inclusions—are increasingly
sought after by collectors and investors. With limited supply and rising demand, high-quality
fossils can appreciate significantly over time, making them both a scientific treasure and a smart
long-term investment. Diversify your portfolio with Astro West!