Moldavite Gemstone & Information | Gemopedia by JTV | Gemopedia™

Moldavite

Considered a blend of heaven and earth, tektites are fragments of natural glass formed from meteorite impacts with our planet. Tektites are assigned names based on their location. Thus, moldavite, named after the Moldau river in the Czech Republic, is found in that country. The intense pressure and temperatures present during its formation preserve tiny gaseous bubbles in many moldavite gems.

Colors

Medium To Dark Yellowish To Grayish Green

  • Moldavite classification

    CommonName
    Moldavite
    Species
    Tektite
    Variety
    Moldavite
    Colors
    Medium To Dark Yellowish To Grayish Green
    AlternateNames
    Bouteille Stone
    GemstoneGroups
    KeySeparations
    refractive index, SR nature, magnification, and specific gravity
    ClassificationComments
    Moldavite is a type of natural glass. In some classification schemes, moldavite is considered a species without reference to tektite. Tektite is a general term used for natural glasses formed by meteoric impacts. Misnomers: Bohemian chrysolite, false chrysolite, glass chrysolite, glass metorite, pseudochrysolite
  • Moldavite chemistry & crystallography

    ChemicalName
    silica
    ChemicalFormula
    SiO2 (+A2O3)
    Synthesis
    CrystalSystem
    NA
    ChemistryClassification
    Mineraloid
    Nature
    Natural
    Crystallinity
    Non-Crystalline
    ChemistryComments
  • Moldavite optical properties

    Transparency
    Transparent - Translucent
    Dispersion
    OpticalComments
    RefractiveIndex
    1.49-1.49
    Tolerance:(+0.020/-0.010)
    Birefringence
    0-0
    OpticCharacter
    NA
    OpticSign
    NA
    PolariscopeReaction
    Singly Refractive (SR) With ADR
    Fluorescence
    SWUV: Inert
    LWUV: Inert
    CCFReaction
    Pleochroism
    None
  • Moldavite characteristic physical properties

    Hardness
    5-5.5
    CharacteristicComments
    Streak
    SpecificGravity
    2.32-2.4 Range:+/-0.04 Typical:2.36
    Toughness
    Varies
    Inclusions
    Moldavite often has round and elongated gas bubbles, flow lines and a roiled, cloudy or turbid appearance.
    Luster
    Vitreous
    Stability
    Fracture
    Conchoidal
    Cleavage
    None