Fluorite Gemstone & Information | Gemopedia by JTV | Gemopedia™
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."
Green, Blue, Brown, Yellow, Orange, Pink, Purple, Violet, Parti Colored, Colorless
Fluorite classificationCommonNameFluoriteSpeciesFluoriteVarietyColorsGreen, Blue, Brown, Yellow, Orange, Pink, Purple, Violet, Parti Colored, ColorlessAlternateNamesFluorspar, Rainbow FluoriteGemstoneGroupsKeySeparationsrefractive index, specific gravity, color zoning and possibly cleavageClassificationCommentsRainbow 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 & crystallographyChemicalNamecalcium fluorideChemicalFormulaCaF2SynthesisCrystalSystemCubicChemistryClassificationHalideNatureNaturalCrystallinityCrystallineChemistryComments
Fluorite optical propertiesTransparencyTransparent - TranslucentDispersionStrength: weak fire Value: 0.007OpticalCommentsRefractiveIndex1.434-1.434
Tolerance:(+0.001/-0.001)Birefringence0-0OpticCharacterNAOpticSignNAPolariscopeReactionSingly Refractive (SR)FluorescenceSWUV: Variable
Fluorite characteristic physical propertiesHardness4CharacteristicCommentsStreakWhiteSpecificGravity3-3.25 Range:0.07/-0.18 Typical:3.18ToughnessPoorInclusionsFluorite 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.LusterVitreousStabilityFairFractureConchoidal, Step-LikeCleavagePerfect, in four directions