Bronze
What is Bronze?
Bronze is an alloy primarily composed of copper, typically with tin as the main additive. It can also include other metals like zinc, manganese, and aluminum. Bronze is known for its durability, corrosion resistance, and aesthetic appeal, making it a versatile material used in various applications throughout history, including tools, weapons, sculptures, and architectural elements. The exact composition and properties of bronze can vary depending on the specific metals and proportions used.
Optical Properties
- Refractive Index
- 1.100
- Birefringence
- 0.000
- Pleochroism
- None
- Optical Character
- Isotropic
- Dispersion
- 0.000
Discover Values
This stone excels in cultural value.
Market Value Factors
Pricing varies for every rock and mineral, so use these universal factors to gauge Bronze before comparing listings or appraisals.
Size & Weight
Larger, intact specimens usually command higher prices.
Rarity & Demand
Scarce material or popular varieties sell at a premium.
Condition & Finish
Chips, repairs, and heavy wear lower value; clean prep helps.
Treatment & Provenance
Untreated specimens with documented locality are prized.
Bronze Localities Map
See where Bronze is found with a localities map, collecting zones, and geology context. Generate a sample map preview below.
Quick Facts
Physical Properties
- Color
- Golden yellow to reddish-brown
- Hardness (Mohs)
- 3-4
- Density
- 8.72 g/cm³
- Luster
- Metallic
- Crystal System
- Amorphous
Chemical Properties
- Chemical Formula
- CuSn (Copper and Tin)
- Elements
- Copper, Tin, (and other metals depending on the alloy)
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Bronze FAQs
How do I identify Bronze?
Bronze can be identified by its hardness of 3-4 on the Mohs scale, Golden yellow to reddish-brown color, Metallic luster, Amorphous crystal system. Look for these key characteristics when examining specimens.
What color is Bronze?
Bronze typically appears in Golden yellow to reddish-brown. Color can vary depending on impurities and formation conditions.
How hard is Bronze?
Bronze has a hardness of 3-4 on the Mohs scale. This makes it a soft mineral that can be scratched easily.