Diamond (Laser-Drilled) Gemstone & Information | Gemopedia by JTV | Gemopedia™

Diamond (Laser-Drilled)

In light or colorless gemstones, dark inclusions are more easily seen than colorless ones, so a means of lightening dark inclusions was developed using lasers. In laser drilling treatments, a narrow channel is laser drilled from the stone's surface to the dark inclusion. Once the open channel has been created, a mixture of boiling acid is introduced under pressure and the inclusion is subsequently bleached or dissolved.

Colors

Colorless, Gray, Light Yellow, Light Brown

  • Diamond-laser-drilled classification

    CommonName
    Diamond (Laser-Drilled)
    Species
    Diamond
    Variety
    Laser-Drilled 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

  • Diamond-laser-drilled chemistry & crystallography

    ChemicalName
    carbon
    ChemicalFormula
    C
    Synthesis
    CrystalSystem
    Cubic
    ChemistryClassification
    Nature
    Natural
    Crystallinity
    Crystalline
    ChemistryComments

  • Diamond-laser-drilled optical properties

    Transparency
    Transparent - Opaque
    Dispersion
    OpticalComments
    RefractiveIndex
    2.417-0
    Birefringence
    OpticCharacter
    NA
    OpticSign
    NA
    PolariscopeReaction
    Singly Refractive (SR)
    Fluorescence
    SWUV: Variable
    LWUV: Variable
    CCFReaction
    Pleochroism
    None

  • Diamond-laser-drilled characteristic physical properties

    Hardness
    10
    CharacteristicComments
    Streak
    SpecificGravity
    3.51-3.53 Typical:3.52
    Toughness
    Varies
    Inclusions
    The stones will have laser drill holes that reach the surface and sometimes appear similar to wormhole like channels. The holes can be differentiated from natural etch channels because natural channels will have a geometric structure. Stones will have bleached white inclusions. If stones are glass filled they will 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.
    Luster
    Adamantine
    Stability
    Very Good
    Fracture
    Step-Like
    Cleavage
    Perfect, in four directions