Bronzite
A variety of Enstatite
What is Bronzite?
Bronzite is a decorative mineral that occurs in an almost metallic bronze coloration, which is how the mineral received its name. This mineral is a variety of enstatite as it bears iron (III). Bronzite is sometimes used to make ornamental decorations but is usually not the first material of choice.
Uses & Applications
Bronzite is a mineral that is sometimes shaped and polished for use in jewelry. It is valued for its swirled two-tone color that can make for a breathtaking necklace piece when cut into cabochons. Its shine and luster also lend this material to the creation of beautiful beads and tumbled stones.
Optical Properties
- Refractive Index
- 1.668
- Birefringence
- 0.014
- Pleochroism
- Brown variety - strong trichroism: pinkish red to brown, yellow, green
- Green variety - distinct: yellow-green, green
- Optical Character
- Biaxial positive or negative
Discover Values
Market Value Factors
Pricing varies for every rock and mineral, so use these universal factors to gauge Bronzite 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.
Bronzite Localities Map
See where Bronzite is found with a localities map, collecting zones, and geology context. Generate a sample map preview below.
The Meaning
Bronzite played an important role in Roman and Greek cultures. It is said that they used powdered bronzite as an ingredient of an elixir that had the ability to protect against mental illness and confusion. It was also used in protective amulets. Bronzite is associated with the Zodiac sign of Leo.
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Quick Facts
Physical Properties
- Color
- Brown, greenish-brown, greenish-black, bronze
- Hardness (Mohs)
- 5.5
- Density
- 3.2 - 3.9 g/cm³
- Streak
- White, Brownish
- Luster
- Metallic
- Crystal System
- Orthorhombic
Chemical Properties
- Chemical Formula
- (Mg,Fe2+)2[SiO3]2
- Elements
- Mg, O, Si
Also Known As
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Bronzite FAQs
How do I identify Bronzite?
Bronzite can be identified by its hardness of 5.5 on the Mohs scale, Brown color, Metallic luster, Orthorhombic crystal system. Look for these key characteristics when examining specimens.
What color is Bronzite?
Bronzite typically appears in Brown, greenish-brown, greenish-black, bronze. Color can vary depending on impurities and formation conditions.
How hard is Bronzite?
Bronzite has a hardness of 5.5 on the Mohs scale. This gives it moderate hardness.