Pyrope Garnet Gemstone & Information | Gemopedia by JTV | Gemopedia™
Hear the word "garnet," and what invariably comes to mind is the image of the deep red pyrope garnets belonging to the pyralspites family. Pyrope comes from the Greek word pyropos, meaning "fiery eyed." The rich reds are both affordable and beautiful, perfect for not only gemstone collections, but jewelry as well.
Medium To Dark Reddish Orange, Red Through Slightly Orange, Red To Pale Pink, Colorless
Pyrope-garnet classificationCommonNamePyrope GarnetSpeciesPyropeVarietyColorsMedium To Dark Reddish Orange, Red Through Slightly Orange, Red To Pale Pink, ColorlessAlternateNamesChrome Pyrope, Bohemian Garnet (Not Recommended)GemstoneGroupsGarnetKeySeparationsRI , SR nature and spectrum, possible SG. If stone has a pyrope spectrum and an RI slightly above 1.750 it is pyrope garnet. Stones with SG lower than 3.8 and a RI lower than 1.76 are pyrope and those with higher almandine.ClassificationCommentsSome rare light pink to colorless stone can have an RI as low as 1.717. Misnomers: Colorado ruby, Cape ruby, Arizona ruby, Bohemian carbuncle. Stones can show a chrome or non-chrome spectra.
Pyrope-garnet chemistry & crystallographyChemicalNamemagnesium aluminum silicateChemicalFormulaMg3Al2(SiO4)3SynthesisCrystalSystemCubicChemistryClassificationSilicateNatureNaturalCrystallinityCrystallineChemistryComments
Pyrope-garnet optical propertiesTransparencyTransparent - SemitranslucentDispersionStrength: moderate fire Value: 0.022OpticalCommentsRefractiveIndex1.73-1.75BirefringenceOpticCharacterNAOpticSignNAPolariscopeReactionSingly Refractive (SR) With ADRFluorescenceSWUV: Inert
Pyrope-garnet characteristic physical propertiesHardness7-7.5CharacteristicCommentsStreakWhiteSpecificGravity3.62-3.87 Range:0.09/-0.16 Typical:3.78ToughnessVariesInclusionsPyrope garnet is a type II clarity stone. Needle like inclusions and irregular, rounded crystals that can be apatite or zircon.LusterVitreousStabilityGoodFractureConchoidalCleavageNone