Fractured-Filled Emerald Gemstone & Information | Gemopedia by JTV | Gemopedia™

Fractured-Filled Emerald

Fracture filling is the filling of surface-breaking cavities or fissures with highly refractive colorless glass. This process may improve the appearance, durability and/or weight of the emerald.

Colors

Light To Very Dark Green To Strongly Bluish Green, Slightly Yellowish Green

  • Fractured-filled-emerald classification

    CommonName
    Fractured-Filled Emerald
    Species
    Beryl
    Variety
    Fractured-Filled Emerald
    Colors
    Light To Very Dark Green To Strongly Bluish Green, Slightly Yellowish Green
    AlternateNames
    GemstoneGroups
    KeySeparations
    RI, magnification and possibly fluorescence
    ClassificationComments
    Never put emeralds in an ultrasonic cleaner.
  • Fractured-filled-emerald chemistry & crystallography

    ChemicalName
    beryllium aluminum silicate
    ChemicalFormula
    Be3Al2(SiO3)6
    Synthesis
    CrystalSystem
    Hexagonal
    ChemistryClassification
    Silicate
    Nature
    Natural
    Crystallinity
    Crystalline
    ChemistryComments
  • Fractured-filled-emerald optical properties

    Transparency
    Transparent - Translucent
    Dispersion
    Strength: weak fire Value: 0.014
    OpticalComments
    RefractiveIndex
    1.577-1.583
    Tolerance:(+0.017/-0.017)
    Birefringence
    0.005-0.009
    OpticCharacter
    Uniaxial
    OpticSign
    Negative
    PolariscopeReaction
    Doubly Refractive (DR)
    Fluorescence
    SWUV: Variable
    LWUV: Variable
    CCFReaction
    Pleochroism
    Dichroic, moderate to strong, varying shades of body color
  • Fractured-filled-emerald characteristic physical properties

    Hardness
    7.5
    CharacteristicComments
    Streak
    White
    SpecificGravity
    2.67-2.9 Typical:2.72
    Toughness
    Poor
    Inclusions
    If dye is added to the oil or polymer there will be dye concentrations in the cracks. Stones will have surface reaching fractures and you will see flash effect in dark field lighting. Sometimes you can see trapped bubbles in the filling material. Old stones might show whitish or yellowish discoloration of the filler.
    Luster
    Vitreous
    Stability
    Fair
    Fracture
    Conchoidal
    Cleavage
    Poor, in one direction