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Ammonite Jewelry

Ammonite Jewelry

Jewelry Details

Available as a pendant necklace, earrings, or even the full set! Each jewelry piece comes in a decorative box and includes a small information card about the specimen. The card serves as the certificate of authenticity and can be found underneath the padded lining of the display box.

  • The Ammonite pendant necklace features one-half of a polished, bisected ammonite fossil, approximately 1/2 to 1-inch (~1.5 to 2.5cm) wide. The ammonite is displayed in a custom-made, sterling silver bezel which is strung on a box-style chain. The chain measures 18-inches (~45cm) and is also made of sterling silver. The complete necklace comes in a decorative box and includes a small information card about the specimen.
  • The Ammonite earrings feature a bisected pair of ammonite fossils, approximately 1/2 to 3/4-inch (~1.5 to 2cm) wide. As with the pendant necklace, each ammonite fossil is held in sterling silver.

Please Note: Each fossil is a unique creature that lived more than 66,700,000 years ago so colors and size will vary. While all ammonite jewelry displays vibrant quartz inclusions, some specimens also have druzy quartz pockets as well. Images on this page provide an example of typical specimens.

About Ammonites

"Three times during their reign of more than 300 million years, ammonites experimented with the most bizarre and startling shell shapes." ~ Wolfgang Grulke, author of "Heteromorph: The Rarest Fossil Ammonites"

Ammonites are an extinct group of cephalopods that entered the fossil record 400 million years ago.  They survived several mass extinction events, including the Permian–Triassic "Great Dying" which wiped out 96% of all marine species.  They finally succumbed during the Cretaceous-Paleogene extinction event 66 million years ago, which also wiped out the dinosaurs.

The size of ammonite shells ranges from sub-centimeter dwarf species to giants nearly three meters in diameter.  Most iconic shells exhibit a nearly perfect logarithmic spiral.

The main property of a logarithmic spiral is that the shape of the spiral is unaltered as it increases in size.  Each turn is a pure geometrical progression of the last with a common ratio. This form is found in many natural phenomena, from the shape of galaxies to patterns on sunflower heads.

Many thousands of distinct species make up the long-lived ammonoid clade.  Though most ammonite shells are the classic spiral, there are also straight and gastropod-like shells and even some shells that are partially uncoiled.  The surface of the shells also vary quite widely from smooth to wildly thorny.

How these creatures lived is of intense interest to science as ammonites likely played a vital role in the food chain in the ancient seas.  Evidence exists to suggest that ammonites were a prime food source for Mosasaurs and fishes, while other studies suggest the "bite marks" were created after death by limpets or even by other cephalopods.

Aside from their complex shells, there is little direct evidence regarding the appearance of ammonites due to the absence of soft-tissue fossils.  However, many scientists believe ammonites had bodies similar to that of the present-day Nautilus.

  Above: Back of the Jewelry Card

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