If I said the word fossil, you would probably go directly to thinking about dinosaurs, arid dusty sites crawling with paleontologists, and perhaps even Jurassic Park comes to mind.


Paleontologists, getting down and dirty.

Jurassic World

I can’t talk about fossils without talking about dinosaurs, which leads us to Jurassic Park, right?


A very cool fossil.  A friend tells me it could be a sauropod.

Actually, fossils are far smaller and more common that you might think.  Ever heard of amber, coral, or peanut wood?  All fossils.   How about petrified palm or petrified wood (think Petrified Forest)? Yup, fossils.  Septarian (dragon stone)?  Nope.  Though they certainly look like they could be. Consider this your primer on fossils.  Let’s start with some basics, then I’ll get into some of my favorites.


Yes, that coral that you see in the ocean and brightly colored in Florida gift shops.  I’m sure you know coral is an actual animal, right?  Corals are simple animals that secrete skeletons made of calcium carbonate.  The proper name for fossilized coral is agatized fossil coral because during formation, the skeleton is gradually replaced with agate.  Any bright colored coral you see in the gift shops are dyed.

Fossilized Coral Pendant and unfinished cabochons

Fossilized Coral

Dyed sponge coral heart pendant wrapped in sterling silver swirls

Dyed Sponge Coral




Crinoids are marine animals from the same family as starfishes, sea urchins, sea cucumbers, and brittle stars–crinoids are echinoderms, animals with rough, spiny surfaces and a special kind of radial symmetry based on five or multiples of five. (Yes,  math would be involved to explain it all, so you’ll probably just want to take my word for it…here’s a link to read more about it, if you’re interested.)

Petrified Palm and Petrified Wood

Petrified palm and petrified wood are, as their name implies, fossils…(Petrified Forest, anyone?)  Peanut wood, is also a fossil, though it is not made from peanuts.  All three are fossilized from wood.  You can see the likeness of wood in the petrified palm and petrified wood.   Peanut wood is recognized by its white-to-cream-color markings that are ovoid in shape and about the size of a peanut, and it receives its name from these markings.

Discs of Petrified Palm

Petrified Palm

Peanut Wood

Peanut Wood.  No peanuts were harmed in the making of these cabochons.

Septarian or Dragonstone

Septarian or Dragonstone is not actually a fossil, but sure looks like it could be, right?  A result of volcanic eruptions, dead sea life was chemically attracted to the sediment around them, forming mud balls.  As the ocean receded, the balls dried and cracked.

Septarian Jasper, also known as Dragonstone

Septarian (a.k.a. Dragonstone)…not actually a fossil.

Several of my favorite fossils to work with are amber, ammolite/ammonite, and orthoceras.  Let me tell you a little about them.


Amber is fossilized resin.  While you are probably familiar with the traditional clear yellow stone, usually with some critter or plant trapped for eternity within, you probably didn’t know that amber comes in many different colors, and is not always clear.

Amber comes in many colors

The many colors of amber.

Amber Leaf Earrings

Ammolite and Ammonite

Ammolite is an opal-like organic gemstone found primarily along the eastern slopes of the Rocky Mountains of North America. It is made of the fossilized shells of ammonites, which are an extinct group of marine mollusk animals.

Ammolite, which comes from Ammonite

Ammolite comes from …

Ammonite.  Fossilized mollusks.



Orthoceras fossils are the remains of an invertebrate, no backbone, that belongs to the Phylum Mollusca. Some examples of Orthoceras fossils animals are snails, slugs, oysters, clams, octopus, and squid.  They are the ancestor to ammonites and squid.

Orthoceras, ancester of ammonite and ammolite

Orthoceras, ancester of ammonite, which is where ammolite comes from.

See?  Dust them off and polish them…fossils can be beautiful , too!

BTW, many of these fossils that I have in my studio are still unfinished.  If you’d like a fossil of your own, contact me for a consultation and we’ll work together to make the perfect piece…for you.

Until next time,