Fluorite Gemstone & Information | Gemopedia by JTV | Gemopedia™

Fluorite

A plentiful, affordable, and colorful gem, many consider fluorite one of the most popular collector's stones worldwide. Fluorite often has excellent clarity and crosses the entire color spectrum. One of the most famous fluorescent minerals, fluorite often requires no type of treatment to enhance its appearance. Also prized for its color-change and distinctive multi-color banded varieties, this beautiful stone has so many appealing features, it's no wonder that Roman historian Pliny the Elder named fluorite his "most precious substance."

Colors

Green, Blue, Brown, Yellow, Orange, Pink, Purple, Violet, Parti Colored, Colorless

  • Fluorite classification

    CommonName
    Fluorite
    Species
    Fluorite
    Variety
    Colors
    Green, Blue, Brown, Yellow, Orange, Pink, Purple, Violet, Parti Colored, Colorless
    AlternateNames
    Fluorspar, Rainbow Fluorite
    GemstoneGroups
    KeySeparations
    refractive index, specific gravity, color zoning and possibly cleavage
    ClassificationComments
    Rainbow fluorite is banded and can be found in various shades of yellow, green, purple, white and brown. Stones are often irradiated to improve color.
  • Fluorite chemistry & crystallography

    ChemicalName
    calcium fluoride
    ChemicalFormula
    CaF2
    Synthesis
    CrystalSystem
    Cubic
    ChemistryClassification
    Halide
    Nature
    Natural
    Crystallinity
    Crystalline
    ChemistryComments
  • Fluorite optical properties

    Transparency
    Transparent - Translucent
    Dispersion
    Strength: weak fire Value: 0.007
    OpticalComments
    RefractiveIndex
    1.434-1.434
    Tolerance:(+0.001/-0.001)
    Birefringence
    0-0
    OpticCharacter
    NA
    OpticSign
    NA
    PolariscopeReaction
    Singly Refractive (SR)
    Fluorescence
    SWUV: Variable
    LWUV: Variable
    CCFReaction
    Pleochroism
    None
  • Fluorite characteristic physical properties

    Hardness
    4
    CharacteristicComments
    Streak
    White
    SpecificGravity
    3-3.25 Range:0.07/-0.18 Typical:3.18
    Toughness
    Poor
    Inclusions
    Fluorite will sometimes have triangular negative crystals, mineral inclusions, color zoning, healing cracks 2-phase and 3-phase inclusions and liquid inclusions. Might have pits or scratches on surface.
    Luster
    Vitreous
    Stability
    Fair
    Fracture
    Conchoidal, Step-Like
    Cleavage
    Perfect, in four directions