Ammonite Fossil Matched Pair Halves
Ammonite Fossil Matched Pair Halves

Ammonite Fossil Matched Pair Halves

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Size chart

Use this reference guide to convert between centimeters, millimeters, and inches when shopping for crystals. All Crystal Destiny product listings show measurements in millimeters (mm).

CM to MM to Inches Conversion Chart

Centimeters (cm) Millimeters (mm) Inches (in)
0.5 cm 5 mm 0.2 in
1 cm 10 mm 0.39 in
1.5 cm 15 mm 0.59 in
2 cm 20 mm 0.79 in
2.5 cm 25 mm 0.98 in
3 cm 30 mm 1.18 in
3.5 cm 35 mm 1.38 in
4 cm 40 mm 1.57 in
4.5 cm 45 mm 1.77 in
5 cm 50 mm 1.97 in
5.5 cm 55 mm 2.17 in
6 cm 60 mm 2.36 in
6.5 cm 65 mm 2.56 in
7 cm 70 mm 2.76 in
7.5 cm 75 mm 2.95 in
8 cm 80 mm 3.15 in
8.5 cm 85 mm 3.35 in
9 cm 90 mm 3.54 in
9.5 cm 95 mm 3.74 in
10 cm 100 mm 3.94 in
11 cm 110 mm 4.33 in
12 cm 120 mm 4.72 in
13 cm 130 mm 5.12 in
14 cm 140 mm 5.51 in
15 cm 150 mm 5.91 in
16 cm 160 mm 6.30 in
17 cm 170 mm 6.69 in
18 cm 180 mm 7.09 in
19 cm 190 mm 7.48 in
20 cm 200 mm 7.87 in
25 cm 250 mm 9.84 in
30 cm 300 mm 11.81 in

Quick Reference

  • 1 cm = 10 mm = 0.394 inches
  • 1 inch = 25.4 mm = 2.54 cm
  • 1 mm = 0.1 cm = 0.039 inches

All Crystal Destiny product measurements are listed in millimeters (mm). Use this chart to convert to your preferred unit of measurement.

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Ammonites are among the most iconic fossils in the world, and a matched pair of halves is one of the most satisfying ways to experience them. When a single ammonite is cut and polished through its center, the two halves reveal a perfect mirror image of the internal chamber structure: the intricate suture lines, the logarithmic spiral, and the iridescent nacre that lines the chambers of the finest specimens. This Ammonite Fossil Matched Pair presents both halves of a single specimen, allowing you to display them together as a complete fossil or separately as two individual pieces. Sold as a pair. Exact pick, one of a kind.

What Are Ammonites?

Ammonites were cephalopod mollusks that lived in the world's oceans from approximately 400 million years ago until their extinction at the end of the Cretaceous period, 66 million years ago. They are closely related to modern nautiluses and are characterized by their distinctive coiled shell divided into chambers by complex suture walls. As the animal grew, it moved forward into a new, larger chamber and sealed off the previous one, creating the internal spiral structure visible in cut specimens. Ammonites are found on every continent and are among the most studied and collected fossils in paleontology. In crystal healing and metaphysical practice, ammonite fossils are associated with ancient wisdom, transformation, and the energy of deep time.

Metaphysical Properties

Ammonite fossils are associated with the Root Chakra for grounding and the energy of deep time, and with transformation and the completion of cycles. The spiral form is one of the most universal symbols in nature, representing growth, evolution, and the continuous unfolding of life. In crystal healing, ammonite fossils are used to access ancient wisdom, support major life transitions, and connect with the long, patient rhythms of geological time.

How to Use Your Ammonite Pair

Display both halves together as a complete fossil on a shelf, desk, or altar. Separate them and display in different locations to share the energy of the pair. Use during meditation as a grounding and transformation anchor. Place in a sacred space as a symbol of ancient wisdom and the completion of cycles. Cleanse monthly by smudging with sage or placing on a Selenite charging plate overnight.

Product Highlights

  • Genuine Ammonite fossil matched pair halves, cut and polished to reveal the internal chamber structure
  • Perfect mirror image of suture lines, logarithmic spiral, and internal chambers in both halves
  • Fossil from the Cretaceous period, approximately 66 to 400 million years old
  • Activates the Root Chakra for grounding and connection to deep time
  • Symbol of transformation, ancient wisdom, and the completion of cycles
  • Sold as a pair, exact pick as pictured, one of a kind

Crystal Care

Ammonite fossils are generally stable and durable. Wipe clean with a dry or slightly damp cloth. Avoid harsh chemicals. Store on a stable surface where the halves won't be knocked or scratched. Cleanse by smudging with sage or palo santo, or use sound cleansing.

Frequently Asked Questions

What are the lines inside the ammonite?
The intricate lines visible in the cut surface are suture lines, the boundaries between the internal chambers of the ammonite's shell. As the animal grew, it secreted new chamber walls with increasingly complex suture patterns. The complexity of the suture lines is one of the key features used to identify and classify ammonite species.

What is the iridescent color in some ammonites?
The iridescent color, called ammolite, comes from the original nacre, or mother-of-pearl, that lined the ammonite's chambers. In some specimens, this nacre has been preserved through the fossilization process and retains its original iridescent optical properties.

What chakra does Ammonite work with?
Ammonite fossils are associated with the Root Chakra for grounding and connection to deep time, and with transformation and the completion of cycles.

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Each crystal is natural and unique, with no two crystals being identical. Some crystal may contain naturally formed cracks within itself, not caused by other objects.

Please note that size, color, and patterns may vary due to the different batches of crystals and its natural inclusions, or hand measurements.

You can always reference the Size Chart on every product page to translate grams to pounds and ounces, and, millimeters and centimeters to inches.

Thank you for understanding and enjoying all the wonders of crystals.

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