Azurmalachite Gemstone & Information | Gemopedia by JTV | Gemopedia™

Azurmalachite

This trade name refers to a natural mixture of azurite and malachite that is often banded and can be used as both a gemstone or in decorative items. The bold greens and blues beautifully intertwine to form unique mineral specimens or gems, each piece always one-of-a-kind.

Colors

Blue, Green Banded Material

  • Azurmalachite classification

    CommonName
    Azurmalachite
    Species
    Azurite, Malachite
    Variety
    Colors
    Blue, Green Banded Material
    AlternateNames
    GemstoneGroups
    KeySeparations
    Appearance, RI, birefringence.
    ClassificationComments
    Since this stone is a combination of azurite and malachite it displays properties of both stones. RI: azurite 1.730 to 1.836 / malachite 1.655 to 1.909. Birefringence: azurite 0.106 / malachite 0.254. SG: azurite 3.80 (+0.09/-0.50) / malachite 3.95 (+0.15/-0.70)
  • Azurmalachite chemistry & crystallography

    ChemicalName
    copper carbonate hydroxide
    ChemicalFormula
    Cu3(CO3)2(OH)2 and Cu2Co3(OH)2
    Synthesis
    CrystalSystem
    Monoclinic
    ChemistryClassification
    Carbonate
    Nature
    Natural
    Crystallinity
    Aggregate
    ChemistryComments
  • Azurmalachite optical properties

    Transparency
    Opaque
    Dispersion
    OpticalComments
    RefractiveIndex
    Over The Limit 1.655-1.909
    Tolerance:(+0.010/-0.010)
    Birefringence
    0.106-0.254
    OpticCharacter
    Biaxial
    OpticSign
    Positive
    PolariscopeReaction
    Aggregate (AGG)
    Fluorescence
    SWUV: Inert
    LWUV: Inert
    CCFReaction
    Pleochroism
    None
  • Azurmalachite characteristic physical properties

    Hardness
    3.5-4
    CharacteristicComments
    Streak
    Light Blue To Light Green
    SpecificGravity
    3.7-3.95 Typical:3.8
    Toughness
    Poor
    Inclusions
    Azurmalachite displays botryoidal growth or circular growth in green and blue. If the stone is stabilized it will appear compressed and have signs of polymer.
    Luster
    Vitreous
    Stability
    Poor
    Fracture
    Conchoidal, Uneven
    Cleavage
    None