Bronzite Gemstone & Information | Gemopedia by JTV | Gemopedia™

Bronzite

Bronzite is an iron-bearing variety of enstatite distinguished by its green-brown color and bronze-like sub-metallic luster with fibrous inclusions. Enstatite is a silicate and a member of the pyroxene group. Appreciated for its sheen, bronzite is sometimes polished to make small ornamental objects.

Colors

Golden Brown, Brown To Black, Green, Colorless, Gray, Yellow

  • Bronzite classification

    CommonName
    Bronzite
    Species
    Enstatite
    Variety
    Bronzite
    Colors
    Golden Brown, Brown To Black, Green, Colorless, Gray, Yellow
    AlternateNames
    GemstoneGroups
    Pyroxene
    KeySeparations
    RI, birefringence, optic character and spectrum
    ClassificationComments
  • Bronzite chemistry & crystallography

    ChemicalName
    magnesium iron silicate
    ChemicalFormula
    (Mg,Fe)2Si2O6
    Synthesis
    CrystalSystem
    Orthorhombic
    ChemistryClassification
    Silicate
    Nature
    Natural
    Crystallinity
    Crystalline
    ChemistryComments
  • Bronzite optical properties

    Transparency
    Transparent - Opaque
    Dispersion
    OpticalComments
    RefractiveIndex
    1.665-1.703
    Tolerance:(+0.010/-0.010)
    Birefringence
    0.008-0.015
    OpticCharacter
    Biaxial
    OpticSign
    Positive
    PolariscopeReaction
    Doubly Refractive (DR)
    Fluorescence
    SWUV: inert
    LWUV: inert
    CCFReaction
    Pleochroism
    Trichroic, strong green, yellow, and reddish brown
  • Bronzite characteristic physical properties

    Hardness
    5-6
    CharacteristicComments
    Streak
    White Or Brownish
    SpecificGravity
    3.3-3.43 Typical:3.35
    Toughness
    Poor
    Inclusions
    Bronzite has fibrous inclusions and might show schiller effect.
    Luster
    Vitreous
    Stability
    Fracture
    Uneven
    Cleavage
    Good, in one direction