Mali Garnet Gemstone & Information | Gemopedia by JTV | Gemopedia™

Mali Garnet

Mali garnet is one of the latest discoveries in the garnet family. This attractive and very interesting rare mixture of andradite and grossular was only discovered in late 1994 at the Sandar Mine in Mali's Kayes region (Diakon Arrondissement). Extremely rare, Mali garnets are a bright, uniform light yellowish green color.

Colors

Slightly Greenish Yellow, Intense Green To Brown-Orange, Dark Orangy Brown

  • Mali-garnet classification

    CommonName
    Mali Garnet
    Species
    Grossularite-Andradite
    Variety
    Mali Garnet
    Colors
    Slightly Greenish Yellow, Intense Green To Brown-Orange, Dark Orangy Brown
    AlternateNames
    Grandite
    GemstoneGroups
    Garnet
    KeySeparations
    RI, SR nature and spectrum.
    ClassificationComments
    Yellowish green stones RI: 1.752 to 1.769 SG:3.64 to 3.68Green stones RI: 1.762 to 1.764 SG: 3.65 to 3.67Orange stones RI 1.773 to 1.779 SG: 3.67 to 3.68
  • Mali-garnet chemistry & crystallography

    ChemicalName
    ChemicalFormula
    Ca3(Al,Fe3+,Mn,Cr2Si3O12 to Ca3(Fe3+,Al,Cr,,Ti)2Si3O12
    Synthesis
    CrystalSystem
    Cubic
    ChemistryClassification
    Silicate
    Nature
    Natural
    Crystallinity
    Crystalline
    ChemistryComments
  • Mali-garnet optical properties

    Transparency
    Transparent - Translucent
    Dispersion
    OpticalComments
    RefractiveIndex
    1.752-1.779
    Birefringence
    OpticCharacter
    NA
    OpticSign
    NA
    PolariscopeReaction
    Singly Refractive (SR) With ADR
    Fluorescence
    SWUV: Inert
    LWUV: Inert
    CCFReaction
    Pleochroism
    None
  • Mali-garnet characteristic physical properties

    Hardness
    6.5-7.5
    CharacteristicComments
    Streak
    SpecificGravity
    3.64-3.68
    Toughness
    Good
    Inclusions
    Many Mali garnet stones are inclusion free but sometimes small mineral crystals and fingerprints are found along with parallel growth planes.
    Luster
    SubAdamantine
    Stability
    Good
    Fracture
    Conchoidal, Uneven
    Cleavage
    None