Clinozoisite Gemstone & Information | Gemopedia by JTV | Gemopedia™

Clinozoisite

Named for its resemblance to zoisite, clinozoisite is a colorless to pale grayish-yellow to green-colored mineral ideal for faceting. This gem was first discovered in Austria 1896, but there are many locations world wide where specimens have been found.

Colors

Colorless, Yellow, Yellow-Brown, Greenish, Pink

  • Clinozoisite classification

    CommonName
    Clinozoisite
    Species
    Clinozoisite
    Variety
    Colors
    Colorless, Yellow, Yellow-Brown, Greenish, Pink
    AlternateNames
    GemstoneGroups
    Epidote
    KeySeparations
    RI, birefringence and optic character
    ClassificationComments
  • Clinozoisite chemistry & crystallography

    ChemicalName
    calcium aluminum silicate hydroxide
    ChemicalFormula
    Ca2Al3(SiO4)3(OH)
    Synthesis
    CrystalSystem
    Monoclinic
    ChemistryClassification
    Silicate
    Nature
    Natural
    Crystallinity
    Crystalline
    ChemistryComments
  • Clinozoisite optical properties

    Transparency
    Transparent - Translucent
    Dispersion
    OpticalComments
    RefractiveIndex
    1.67-1.734
    Birefringence
    0.01
    OpticCharacter
    Biaxial
    OpticSign
    Positive
    PolariscopeReaction
    Doubly Refractive (DR)
    Fluorescence
    SWUV: Inert
    LWUV: Inert
    CCFReaction
    Pleochroism
    Unobservable
  • Clinozoisite characteristic physical properties

    Hardness
    6-7
    CharacteristicComments
    Streak
    White To Gray
    SpecificGravity
    3.21-3.38
    Toughness
    Poor
    Inclusions
    Luster
    Vitreous
    Stability
    Fracture
    Uneven
    Cleavage
    Perfect, in one direction