Mali Garnet Gemstone & Information | Gemopedia by JTV | Gemopedia™
Mali garnet is one of the latest discoveries in the garnet family. This attractive and very interesting rare mixture of andradite and grossular was only discovered in late 1994 at the Sandar Mine in Mali's Kayes region (Diakon Arrondissement). Extremely rare, Mali garnets are a bright, uniform light yellowish green color.
Slightly Greenish Yellow, Intense Green To Brown-Orange, Dark Orangy Brown
Mali-garnet classificationCommonNameMali GarnetSpeciesGrossularite-AndraditeVarietyMali GarnetColorsSlightly Greenish Yellow, Intense Green To Brown-Orange, Dark Orangy BrownAlternateNamesGranditeGemstoneGroupsGarnetKeySeparationsRI, SR nature and spectrum.ClassificationCommentsYellowish green stones RI: 1.752 to 1.769 SG:3.64 to 3.68Green stones RI: 1.762 to 1.764 SG: 3.65 to 3.67Orange stones RI 1.773 to 1.779 SG: 3.67 to 3.68
Mali-garnet chemistry & crystallographyChemicalNameChemicalFormulaCa3(Al,Fe3+,Mn,Cr2Si3O12 to Ca3(Fe3+,Al,Cr,,Ti)2Si3O12SynthesisCrystalSystemCubicChemistryClassificationSilicateNatureNaturalCrystallinityCrystallineChemistryComments
Mali-garnet optical propertiesTransparencyTransparent - TranslucentDispersionOpticalCommentsRefractiveIndex1.752-1.779BirefringenceOpticCharacterNAOpticSignNAPolariscopeReactionSingly Refractive (SR) With ADRFluorescenceSWUV: Inert
Mali-garnet characteristic physical propertiesHardness6.5-7.5CharacteristicCommentsStreakSpecificGravity3.64-3.68ToughnessGoodInclusionsMany Mali garnet stones are inclusion free but sometimes small mineral crystals and fingerprints are found along with parallel growth planes.LusterSubAdamantineStabilityGoodFractureConchoidal, UnevenCleavageNone