Irradiated Diamond Gemstone & Information | Gemopedia by JTV | Gemopedia™

Irradiated Diamond

Exceptional quality colored diamonds are rare and extremely expensive. However, naturally dark or tinted diamonds can be irradiated to create a more pleasing, uniform color. Modern irradiation practices leave diamonds vibrantly colored and non-radioactive, creating beautiful options for gemstone collecting and jewelry. Once a diamond has been irradiated it becomes very sensitive to heat, so jewelers need to take care when using a jeweler's torch.

Colors

Green, Brown, Blue, Yellow, Orange; Very Rarely Pink, Purple, Red

  • Irradiated-diamond classification

    CommonName
    Irradiated Diamond
    Species
    Diamond
    Variety
    Irradiated Diamond
    Colors
    Green, Brown, Blue, Yellow, Orange; Very Rarely Pink, Purple, Red
    AlternateNames
    GemstoneGroups
    KeySeparations
    Fluorescence, spectrum, polish luster, OTL RI, SR nature, magnification, positive reaction to diamond tester
    ClassificationComments
  • Irradiated-diamond chemistry & crystallography

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

    Transparency
    Transparent - Translucent
    Dispersion
    Strength: moderate fire Value: 0.044
    OpticalComments
    RefractiveIndex
    Over the Limit 2.417-2.417
    Birefringence
    OpticCharacter
    NA
    OpticSign
    NA
    PolariscopeReaction
    Singly Refractive (SR) With ADR
    Fluorescence
    SWUV: Variable
    LWUV: Variable
    CCFReaction
    Pleochroism
    None
  • Irradiated-diamond characteristic physical properties

    Hardness
    10
    CharacteristicComments
    Streak
    White
    SpecificGravity
    3.5-3.53 Typical:3.52
    Toughness
    Excellent
    Inclusions
    Diamonds can have naturals, naturals with trigons, bruted girdle surface if not faceted, bearding, sharp facet junctions, angular mineral inclusions, olivine, garnet, diopside, graphite mineral inclusions, parallel growth marks, color zoning, internal grainingRed irradiated diamonds will have an even distribution of color but might show color zoning associated with the facets. In blue stones the color is usually even but can be uneven with blue and colorless zones. Might show facet-related color zoning or color at the culet. Green stones show distinct color zone around the culet in a "umbella" pattern and color zoning that follows the facet junctions.
    Luster
    Adamantine
    Stability
    Good
    Fracture
    Step-Like
    Cleavage
    Perfect, in four directions