Trilobite

Easy to obtain
Trilobite specimen - rock identification

What is Trilobite?

Trilobites are extinct marine arthropods that lived over 520 million years ago. They are characterized by their three-lobed body plan, which gives them their name. Trilobites are among the most diverse groups of extinct animals, with over 20,000 species described. They are found worldwide, and their fossils are often well-preserved, making them popular among collectors.

Optical Properties

Refractive Index
Variable
Birefringence
0.000
Pleochroism
None
Optical Character
Isotropic
Dispersion
0.000

Discover Values

Rarity
3.5out of 5.0
70%
Popularity
4.2out of 5.0
84%
Beauty
3.0out of 5.0
60%
Cultural Value
4.5out of 5.0
90%
Excellent
Collection Value
3.8out of 5.0
76%
Perfect for educational purposes and cultural appreciation

This stone excels in cultural value.

Trilobite Market Value Calculator

Estimate the market value of Trilobite using size, quality, and finish. This preview calculator is for quick context and is not a formal appraisal.

Preview only. Full pricing comps and valuation report in the app.

Trilobite Localities Map

See where Trilobite is found with a localities map, collecting zones, and geology context. Generate a sample map preview below.

Map preview
North ZoneCentral RidgeSouth Basin

Interactive map layers and collecting notes are available in the app.

More Images

Trilobite specimen 2
© Mike Peel
Trilobite specimen 3
© Amir Ali Iranshahi 3

Quick Facts

Physical Properties

Color
Various, depending on the mineral composition of the fossil (e.g., brown, gray, black)
Hardness (Mohs)
5-7
Density
Variable
Luster
Earthy
Crystal System
Amorphous

Chemical Properties

Chemical Formula
Variable, depends on the mineral composition of the fossil (e.g., calcium carbonate, silica)
Elements
Variable, depends on the mineral composition of the fossil (e.g., Ca, C, O, Si)
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