Larvikite Gemstone & Information | Gemopedia by JTV | Gemopedia™

Larvikite

Larvikite is a feldspar-rich igneous rock, called a monzonite and is named for the town in Norway where it was found. One characteristic of this stone is its unique iridescence, caused by the presence of interlocking feldspar crystals within the structure of the stone. Through the wonders of nature, each polished gem has a sheen that sparkles with deep silver tones. Usually, this stone is used in ornamental and decorative purposes.

Colors

Bluish Gray, Greenish Blue Gray, Sometimes with Golden Brown Overtone

  • Larvikite classification

    CommonName
    Larvikite
    Species
    Larvikite
    Variety
    Colors
    Bluish Gray, Greenish Blue Gray, Sometimes with Golden Brown Overtone
    AlternateNames
    Norwegian Pearl Granite And Royal Blue Pearl Granite
    GemstoneGroups
    KeySeparations
    Appearance
    ClassificationComments
    Larvikite comes from Larvik, Norway and is a igneous rock that contains mostly feldspar but can also contain olivine, titanian augite, titanian magnetite, apatite and quartz. Misnomers: blue granite or birds eye granite.Norwegian Pearl granite: lighter variety of lakvikite.Royal blue pearl granite: darker variety of lakvikite.
  • Larvikite chemistry & crystallography

    ChemicalName
    ChemicalFormula
    Synthesis
    CrystalSystem
    NA
    ChemistryClassification
    Rock
    Nature
    Natural
    Crystallinity
    Aggregate
    ChemistryComments
  • Larvikite optical properties

    Transparency
    Transparent - Opaque
    Dispersion
    OpticalComments
    RefractiveIndex
    Birefringence
    OpticCharacter
    OpticSign
    PolariscopeReaction
    Fluorescence
    SWUV:
    LWUV:
    CCFReaction
    Pleochroism
    None
  • Larvikite characteristic physical properties

    Hardness
    6-6.5
    CharacteristicComments
    Streak
    SpecificGravity
    Typical:2.59
    Toughness
    Inclusions
    Larvikite displays the blue sheen or shiller effect which is caused by alternating alkali feldspar and plagioclase layers.
    Luster
    Pearly
    Stability
    Fracture
    Cleavage