Variscite Gemstone & Information | Gemopedia by JTV | Gemopedia™

Variscite

Variscite is a phosphate mineral that is translucent to opaque with green to bluish green coloring that is often mottled or veined. This gem is commonly cut en cabochon or used for carvings. With a similar appearance to green turquoise, variscite is named for its location of first discovery in Germany. When mined in Utah, some prefer to call it Utahlite.

Colors

Light To Medium Yellowish Green To Bluish Green; Often Mottled, Veined With Yellow To Brown Matrix

  • Variscite classification

    CommonName
    Variscite
    Species
    Variscite
    Variety
    Colors
    Light To Medium Yellowish Green To Bluish Green; Often Mottled, Veined With Yellow To Brown Matrix
    AlternateNames
    Utahlite, Amatrice, Sabalite, Trainite Or Chol-Utahlite
    GemstoneGroups
    KeySeparations
    appearance, RI, spectrum, color filter and SG
    ClassificationComments
    Sabalite and trainite are banded green varieties of variscite. Misnomers: Nevada turquoise and California turquoise
  • Variscite chemistry & crystallography

    ChemicalName
    hydrous aluminum phosphate
    ChemicalFormula
    AlPO4.2H2O
    Synthesis
    CrystalSystem
    Orthorhombic
    ChemistryClassification
    Phosphate
    Nature
    Natural
    Crystallinity
    Aggregate
    ChemistryComments
  • Variscite optical properties

    Transparency
    Translucent - Opaque
    Dispersion
    OpticalComments
    RefractiveIndex
    1.56-1.59
    Tolerance:(+0.003/-0.006)
    Birefringence
    0.031
    OpticCharacter
    Biaxial
    OpticSign
    Negative
    PolariscopeReaction
    Doubly Refractive (DR)
    Fluorescence
    SWUV: Inert to weak green
    LWUV: Inert to weak green
    CCFReaction
    pinkish to red
    Pleochroism
    None
  • Variscite characteristic physical properties

    Hardness
    3.5-5
    CharacteristicComments
    Streak
    White
    SpecificGravity
    2.4-2.6 Typical:2.5
    Toughness
    Poor
    Inclusions
    Variscite mottled in appearance with yellow to brown matrix. Material from Utah is lime green and has a swirled appearance.
    Luster
    Vitreous
    Stability
    Fracture
    Granular, Uneven
    Cleavage
    None