Vegetable Ivory Gemstone & Information | Gemopedia by JTV | Gemopedia™
Also known as "tagua," vegetable ivory is the hard white inside of the seeds of certain nut palm trees. Named for its resemblance to elephant ivory, it is often carved for jewelry and ornaments as a renewable alternative to true ivory. Such use has been employed since the 1880's, with material often produced in the coastal rain forests of Ecuador and Peru.
White To Light Yellow, But Can Be Dyed Almost Any Color
Vegetable-ivory classificationCommonNameVegetable IvorySpeciesVegetable IvoryVarietyColorsWhite To Light Yellow, But Can Be Dyed Almost Any ColorAlternateNamesTagua Nut Or Corozo NutGemstoneGroupsKeySeparationsMagnificationClassificationCommentsVegetable ivory comes from the seeds of certain species of palm trees.
Vegetable-ivory chemistry & crystallographyChemicalNameChemicalFormulaSynthesisCrystalSystemNAChemistryClassificationOrganicNatureNaturalCrystallinityNon-CrystallineChemistryComments
Vegetable-ivory optical propertiesTransparencyOpaqueDispersionStrength: noneOpticalCommentsRefractiveIndex1.54BirefringenceOpticCharacterNAOpticSignNAPolariscopeReactionAggregate (AGG)FluorescenceSWUV: Inert
Vegetable-ivory characteristic physical propertiesHardness2.5CharacteristicCommentsStreakSpecificGravity1.38-1.42ToughnessInclusionsVegetable ivory might show parallel lines and has a dot like pattern in cross section.LusterDullStabilityFractureCleavageNone