Mineral-like biological tissue

Human Skin (Epidermis/Dermis)

Integumentary tissue (High content of hydroxyapatite in bones, though the surface is biological)

AI-generated identification · may be incorrect

Hardness: 1-2 (Mohs scale); Color: Flesh-toned/Peach; Luster: Dull to oily; Crystal structure: Amorphous/Organic cellular grid; Cleavage: None; Specific gravity: Approx 1.05

Hardness: 1-2 (Mohs scale)
Color: Flesh-toned/Peach
Luster: Dull to oily

Identified March 20, 2026More mineral-like biological tissue →

Explore Human Skin (Epidermis/Dermis) in the encyclopedia →

Identify your own rocks.

Get a report just like this from any photo, free.

App Store Google Play

Physical properties

Hardness: 1-2 (Mohs scale); Color: Flesh-toned/Peach; Luster: Dull to oily; Crystal structure: Amorphous/Organic cellular grid; Cleavage: None; Specific gravity: Approx 1.05

Formation & geological history

Biogenic formation through cellular mitosis; continuous regeneration over a lifetime (Holocene epoch to present); formed in terrestrial biological environments.

Uses & applications

Protective barrier, sensory organ, and thermoregulation; not typically used in industry or construction; historical use of leather in clothing/bookbinding.

Geological facts

The skin is the largest organ of the human body. Every minute, the body sheds about 30,000 to 40,000 dead skin cells.

Field identification & locations

Identify by presence of dermatoglyphics (fingerprints), hair follicles, and elasticity. Found globally across all terrestrial habitats. Not a specimen for mineral collection.