Maw-Sit-Sit Gemstone & Information | Gemopedia by JTV | Gemopedia™

Maw-Sit-Sit

Maw-sit-sit is a rock composed primarily of kosmochlor with varying combinations and amounts of other minerals. Due to its close resemblance to jade, it was believed to be a variety of jade up until the 1960s. This gem is opaque saturated green with dark green to black veining or mottling.

Colors

Saturated Green With Dark Green To Black Veining, Mottling

  • Maw-sit-sit classification

    CommonName
    Maw-Sit-Sit
    Species
    Maw-Sit-Sit
    Variety
    Colors
    Saturated Green With Dark Green To Black Veining, Mottling
    AlternateNames
    GemstoneGroups
    KeySeparations
    appearance and magnification
    ClassificationComments
    Misnomers: jade, albite, jadeite with albite intergrowth, chrome albite, chloromelaniteRI spots of 1.74 and 1.53
  • Maw-sit-sit chemistry & crystallography

    ChemicalName
    hydrated silicon dioxide
    ChemicalFormula
    NaCr[Si2O6]+Fe, Mg
    Synthesis
    CrystalSystem
    NA
    ChemistryClassification
    Silicate
    Nature
    Natural
    Crystallinity
    Aggregate
    ChemistryComments
  • Maw-sit-sit optical properties

    Transparency
    Opaque
    Dispersion
    OpticalComments
    RefractiveIndex
    1.53-1.74
    Birefringence
    OpticCharacter
    OpticSign
    PolariscopeReaction
    Aggregate (AGG)
    Fluorescence
    SWUV: inert
    LWUV: inert
    CCFReaction
    Pleochroism
    None
  • Maw-sit-sit characteristic physical properties

    Hardness
    6
    CharacteristicComments
    Streak
    SpecificGravity
    2.46-3.15 Typical:2.77
    Toughness
    Good
    Inclusions
    Maw-sit-sit will show veining or mottling with black areas of kosmochlor inclusions.
    Luster
    Vitreous
    Stability
    Fracture
    Granular
    Cleavage
    None