Spiny Oyster Shell
Easy to obtain
What is Spiny Oyster Shell?
Spiny Oyster Shells are not true oysters, but rather a type of marine bivalve mollusk belonging to the genus Spondylus. They are known for their vibrant colors, often including shades of red, orange, yellow, and purple, and their spiny exterior. These shells are highly valued for their beauty and are used in jewelry and decorative items. They are found in various marine environments around the world.
Optical Properties
- Refractive Index
- 1.520-1.685
- Birefringence
- 0.100-0.200
- Pleochroism
- None
- Optical Character
- Biaxial negative
- Dispersion
- 0.180
Discover Values
Rarity
1.0out of 5.0
20%
Popularity
3.0out of 5.0
60%
Beauty
4.0out of 5.0
80%
Cultural Value
2.0out of 5.0
40%
Collection Value
2.5out of 5.0
50%
Spiny Oyster Shell Market Value Calculator
Estimate the market value of Spiny Oyster Shell using size, quality, and finish. This preview calculator is for quick context and is not a formal appraisal.
Spiny Oyster Shell Localities Map
See where Spiny Oyster Shell is found with a localities map, collecting zones, and geology context. Generate a sample map preview below.
Map preview
North ZoneCentral RidgeSouth Basin
Quick Facts
Physical Properties
- Color
- Red, orange, yellow, purple, white
- Hardness (Mohs)
- 3.5
- Density
- 2.71 g/cm³
- Luster
- Pearly
- Crystal System
- Amorphous
Chemical Properties
- Chemical Formula
- CaCO3
- Elements
- Ca, C, O
Also Known As
SpondylusThorny Oyster
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