Tiger Iron Gemstone & Information | Gemopedia by JTV | Gemopedia™

Tiger Iron

Tiger iron is a rock that is made up of tiger's eye quartz, black hematite and red jasper. These minerals create contrasting bands of color for a truly unique look popularly used for many sorts of ornamentation and decoration.

Colors

Golden To Red Brown

  • Tiger-iron classification

    CommonName
    Tiger Iron
    Species
    NA
    Variety
    Tiger Iron
    Colors
    Golden To Red Brown
    AlternateNames
    Tigeriron
    GemstoneGroups
    KeySeparations
    Color, appearance, structure
    ClassificationComments
    Stones have bands of black hematite, tiger's-eye and red jasper. Depending on where the rock is tested it can show a quartz RI 1.544 to 1.553 or a OTL RI of hematite.
  • Tiger-iron chemistry & crystallography

    ChemicalName
    silicon dioxide (aka silica) and iron oxide
    ChemicalFormula
    SiO2 and Fe2O3
    Synthesis
    CrystalSystem
    NA
    ChemistryClassification
    Rock
    Nature
    Natural
    Crystallinity
    Aggregate
    ChemistryComments
  • Tiger-iron optical properties

    Transparency
    Opaque
    Dispersion
    OpticalComments
    RefractiveIndex
    Over the Limit 1.544-3.22
    Birefringence
    OpticCharacter
    OpticSign
    PolariscopeReaction
    Fluorescence
    SWUV: Inert
    LWUV: Inert
    CCFReaction
    Pleochroism
    None
  • Tiger-iron characteristic physical properties

    Hardness
    7
    CharacteristicComments
    Streak
    SpecificGravity
    2.64-2.71 Typical:2.66
    Toughness
    Good
    Inclusions
    Tiger iron has contrasting color bands alternating between tiger's-eye, jasper and hematite.
    Luster
    Vitreous
    Stability
    Good
    Fracture
    Cleavage
    None