Lazurite Gemstone & Information | Gemopedia by JTV | Gemopedia™

Lazurite

Lazurite is a richly colored blue mineral primarily seen in cabochon gems or carvings. Lazurite is a major component of lapis lazuli, giving the stone its brilliant blue color. Lazurite crystals are rare, as the gem is most commonly found in massive form and rarely as well-formed crystals.

Colors

Deep Blue, Violet-Blue, Greenish Blue, Green

  • Lazurite classification

    CommonName
    Lazurite
    Species
    Lazurite
    Variety
    Colors
    Deep Blue, Violet-Blue, Greenish Blue, Green
    AlternateNames
    GemstoneGroups
    Sodalite
    KeySeparations
    ClassificationComments
    Lazurite is what give lapis lazuli its blue color. Lazurite is a sufide rich variety of hayne.
  • Lazurite chemistry & crystallography

    ChemicalName
    ChemicalFormula
    Na6Ca2(Al6Si6O24)(SO4,S3,S2,ClOH)2
    Synthesis
    CrystalSystem
    Cubic
    ChemistryClassification
    Silicate
    Nature
    Natural
    Crystallinity
    Crystalline
    ChemistryComments
  • Lazurite optical properties

    Transparency
    Translucent - Opaque
    Dispersion
    OpticalComments
    RefractiveIndex
    1.502-1.522
    Birefringence
    OpticCharacter
    OpticSign
    PolariscopeReaction
    Singly Refractive (SR)
    Fluorescence
    SWUV:
    LWUV:
    CCFReaction
    Pleochroism
    None
  • Lazurite characteristic physical properties

    Hardness
    5.5
    CharacteristicComments
    Streak
    Bright Blue Sometimes White
    SpecificGravity
    2.3-2.4
    Toughness
    Poor
    Inclusions
    Lazurite commonly has white calcite and brassy pyrite inclusions.
    Luster
    Vitreous
    Stability
    Poor
    Fracture
    Uneven
    Cleavage
    Poor