Unakite Gemstone & Information | Gemopedia by JTV | Gemopedia™

Unakite

Unakite is a type of granitic rock that features mottled patterns of green epidote, white to gray quartz, and pink feldspar, occasionally with black veining. This compact, hard gem is most often seen as cabochon gems, carvings and beads or sold as tumbled rough.

Colors

Green, White To Gray, Pink Mottled Appearance Sometimes With Black Veining

  • Unakite classification

    CommonName
    Unakite
    Species
    NA
    Variety
    Colors
    Green, White To Gray, Pink Mottled Appearance Sometimes With Black Veining
    AlternateNames
    GemstoneGroups
    KeySeparations
    appearance
    ClassificationComments
    Stone can have a spot RI between 1.74 to 1.76 or 1.52 to 1.54 depending on which area is tested.
  • Unakite chemistry & crystallography

    ChemicalName
    ChemicalFormula
    Rock composed of green epidote, pink feldspar and white to gray areas of quartz
    Synthesis
    CrystalSystem
    NA
    ChemistryClassification
    Rock
    Nature
    Natural
    Crystallinity
    Aggregate
    ChemistryComments
  • Unakite optical properties

    Transparency
    Opaque
    Dispersion
    Strength: none
    OpticalComments
    RefractiveIndex
    1.729-1.768
    Birefringence
    OpticCharacter
    NA
    OpticSign
    NA
    PolariscopeReaction
    Aggregate (AGG)
    Fluorescence
    SWUV: Inert
    LWUV: Inert
    CCFReaction
    Pleochroism
    None
  • Unakite characteristic physical properties

    Hardness
    6-7
    CharacteristicComments
    Streak
    SpecificGravity
    2.85-3.2 Typical:3
    Toughness
    Fair
    Inclusions
    Unakite has a mottled green and pink appearance with black, white or gray veining.
    Luster
    Vitreous
    Stability
    Fracture
    Granular, Uneven
    Cleavage
    None