Lemon Quartz Gemstone & Information | Gemopedia by JTV | Gemopedia™

Lemon Quartz

Named for its refreshing and invigorating yellow color, the strong citrus tones of this gem type are an unusual quality in the gemstone world. The radiant beauty of lemon quartz gems is dazzling, particularly when light dancing from its facets and it truly comes to life. The lemon color is most likely caused by iron breaching the color centers of the stone. The difference between citrine and lemon quartz is in their saturation and color tone. Because of their color similarity, many gem dealers do not even separate the two and use the name citrine for all yellow quartz.

Colors

Bright Yellow

  • Lemon-quartz classification

    CommonName
    Lemon Quartz
    Species
    Quartz
    Variety
    Lemon Quartz
    Colors
    Bright Yellow
    AlternateNames
    Oro Verde Quartz
    GemstoneGroups
    KeySeparations
    refractive index, birefringence, optic character and optic figure. Careful observation that reveals Brazil-law twinning separates lemon quartz from scapolite with similar properties.
    ClassificationComments
    The lemon color is caused by irradiation.
  • Lemon-quartz chemistry & crystallography

    ChemicalName
    silicon dioxide (aka silica)
    ChemicalFormula
    SiO2
    Synthesis
    CrystalSystem
    Trigonal
    ChemistryClassification
    Silicate
    Nature
    Natural
    Crystallinity
    Crystalline
    ChemistryComments
  • Lemon-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
    Dichroic, unobservable or weak, varying shades of body color
  • Lemon-quartz characteristic physical properties

    Hardness
    7
    CharacteristicComments
    Streak
    White
    SpecificGravity
    2.64-2.69 Typical:2.66
    Toughness
    Good
    Inclusions
    Lemon quartz is a type I clarity stone. Color zoning often present in lemon quartz in the form of "tiger stripes" or "zebra stripes". Stones my contain crystals, negative crystals, liquid inclusions, two-phase inclusions and partially healed fractures.
    Luster
    Vitreous
    Stability
    Good
    Fracture
    Conchoidal
    Cleavage
    None