Quench-Crackled Dyed Quartz Gemstone & Information | Gemopedia by JTV | Gemopedia™

Quench-Crackled Dyed Quartz

For a single crystal to be dyed, it must first be fractured. To achieve this, the method of "quench crackling" combines two types of treatment to improve or alter a stone's appearance. The first step requires the rapid heating and cooling of the stone to create fractures in its surface. The second step is the application of colored dye that is infused under pressure. The dye seeps into the cracks of the crystal to distribute the color throughout the gem.

Colors

Various Colors Due To Dye But Most Commonly Green, Red

  • Quench-crackled-dyed-quartz classification

    CommonName
    Quench-Crackled Dyed Quartz
    Species
    Quartz
    Variety
    Quench Crackled Quartz
    Colors
    Various Colors Due To Dye But Most Commonly Green, Red
    AlternateNames
    Quench-Crackled Quartz
    GemstoneGroups
    KeySeparations
    Refractive index, appearance, birefringence, optic character and optic figure. A bull's-eye optic figure is determinative for quartz; may also show Airy's spiral optic figure and Brazil-law twinning under crossed polarizing filters. Spectra might show presence of Chromium in dyes.
    ClassificationComments
    Stones are heated and then quenched in dye.
  • Quench-crackled-dyed-quartz chemistry & crystallography

    ChemicalName
    silicon dioxide (aka silica)
    ChemicalFormula
    SiO2
    Synthesis
    CrystalSystem
    Trigonal
    ChemistryClassification
    Silicate
    Nature
    Natural
    Crystallinity
    Crystalline
    ChemistryComments
  • Quench-crackled-dyed-quartz optical properties

    Transparency
    Transparent - Translucent
    Dispersion
    Strength: weak fire Value: 0.013
    OpticalComments
    RefractiveIndex
    1.544-1.553
    Tolerance:very constant
    Birefringence
    0.009
    OpticCharacter
    Uniaxial
    OpticSign
    Positive
    PolariscopeReaction
    Doubly Refractive (DR)
    Fluorescence
    SWUV: Inert
    LWUV: Inert
    CCFReaction
    Pleochroism
    None
  • Quench-crackled-dyed-quartz characteristic physical properties

    Hardness
    7
    CharacteristicComments
    Streak
    White
    SpecificGravity
    2.64-2.69 Typical:2.66
    Toughness
    Varies
    Inclusions
    Quench-crackled dyed quartz will have surface reaching fractures with dye concentrations often in a honeycomb pattern. The fractures will have an iridescent appearance.
    Luster
    Vitreous
    Stability
    Fair
    Fracture
    Conchoidal
    Cleavage
    None