Fracture-Filled Diamond Gemstone & Information | Gemopedia by JTV | Gemopedia™

Fracture-Filled Diamond

Fracture filling is the filling of surface-breaking cavities or fissures with highly refractive colorless glass. This process improves the apparent clarity of a diamond.

Colors

Colorless, Gray, Light Yellow, Light Brown

  • Fracture-filled-diamond classification

    CommonName
    Fracture-Filled Diamond
    Species
    Diamond
    Variety
    Fracture-Filled Diamond
    Colors
    Colorless, Gray, Light Yellow, Light Brown
    AlternateNames
    GemstoneGroups
    KeySeparations
    polish luster, OTL RI, SR nature, flash effect in darkfield illumination, magnification, positive reaction to diamond tester
    ClassificationComments
  • Fracture-filled-diamond chemistry & crystallography

    ChemicalName
    carbon
    ChemicalFormula
    C
    Synthesis
    CrystalSystem
    Cubic
    ChemistryClassification
    Native Element
    Nature
    Natural
    Crystallinity
    Crystalline
    ChemistryComments
  • Fracture-filled-diamond optical properties

    Transparency
    Transparent - Opaque
    Dispersion
    Strength: moderate fire Value: 0.044
    OpticalComments
    RefractiveIndex
    2.417-0
    Birefringence
    OpticCharacter
    NA
    OpticSign
    NA
    PolariscopeReaction
    Singly Refractive (SR)
    Fluorescence
    SWUV: Variable
    LWUV: Colorless: Variable
    CCFReaction
    Pleochroism
    None
  • Fracture-filled-diamond characteristic physical properties

    Hardness
    10
    CharacteristicComments
    Streak
    White
    SpecificGravity
    3.51-3.53 Typical:3.52
    Toughness
    Varies
    Inclusions
    Fracture-filled diamonds typically display flash effect or interference color flash in darkfield lighting. Inclusions in these stones are typically trapped gas bubbles, cloudy or discolored material in fractures, crackled or web-like texture. Stone will have drill holes that do not end at a bleached inclusion and there might be evidence of fillers.
    Luster
    Adamantine
    Stability
    Very Good
    Fracture
    Uneven
    Cleavage
    Perfect, in four directions