Unakite Gemstone & Information | Gemopedia by JTV | Gemopedia™
Unakite is a type of granitic rock that features mottled patterns of green epidote, white to gray quartz, and pink feldspar, occasionally with black veining. This compact, hard gem is most often seen as cabochon gems, carvings and beads or sold as tumbled rough.
Green, White To Gray, Pink Mottled Appearance Sometimes With Black Veining
Unakite classificationCommonNameUnakiteSpeciesNAVarietyColorsGreen, White To Gray, Pink Mottled Appearance Sometimes With Black VeiningAlternateNamesGemstoneGroupsKeySeparationsappearanceClassificationCommentsStone can have a spot RI between 1.74 to 1.76 or 1.52 to 1.54 depending on which area is tested.
Unakite chemistry & crystallographyChemicalNameChemicalFormulaRock composed of green epidote, pink feldspar and white to gray areas of quartzSynthesisCrystalSystemNAChemistryClassificationRockNatureNaturalCrystallinityAggregateChemistryComments
Unakite optical propertiesTransparencyOpaqueDispersionStrength: noneOpticalCommentsRefractiveIndex1.729-1.768BirefringenceOpticCharacterNAOpticSignNAPolariscopeReactionAggregate (AGG)FluorescenceSWUV: Inert
Unakite characteristic physical propertiesHardness6-7CharacteristicCommentsStreakSpecificGravity2.85-3.2 Typical:3ToughnessFairInclusionsUnakite has a mottled green and pink appearance with black, white or gray veining.LusterVitreousStabilityFractureGranular, UnevenCleavageNone