Ivory
What is Ivory?
Ivory is a hard, white material from the tusks and teeth of animals, primarily elephants, but also walruses, hippopotamuses, and other mammals. It is composed mainly of dentin, a dense, calcified tissue. Ivory has been prized for centuries for its beauty, workability, and durability, used in carvings, jewelry, and other decorative objects. The color can range from white to creamy yellow, depending on the age and mineral content. Due to the illegal trade and endangerment of the animals that produce ivory, its trade is heavily regulated.
Optical Properties
- Refractive Index
- Approximately 1.54
- Birefringence
- Weak
- Pleochroism
- None
- Optical Character
- Isotropic
- Dispersion
- Low
Ivory Market Value Calculator
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Ivory Localities Map
See where Ivory is found with a localities map, collecting zones, and geology context. Generate a sample map preview below.
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Quick Facts
Physical Properties
- Color
- White, Cream, Yellowish-brown
- Hardness (Mohs)
- 2.5
- Density
- 1.70 to 1.90 g/cm³
- Streak
- White
- Luster
- Vitreous to waxy
- Crystal System
- Amorphous
Chemical Properties
- Chemical Formula
- Complex organic matrix with calcium phosphate.
- Elements
- Carbon, Calcium, Phosphorus, and trace elements.
Also Known As
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