Limestone Gemstone & Information | Gemopedia by JTV | Gemopedia™

Limestone

Limestone is composed mainly of calcite and occurs in thick extensive, multiple layers. It is formed in shallow seas from a combination of calcium carbonate or the accumulation of shells and skeletons of calcareous marine organisms. Limestone is abundant and is very important commercially as it has a number of different uses as a building stone, cement and as a raw material in the glass manufacturing process. Limestone that is recrystallized under heat and pressure becomes marble.

Colors

White, Gray, Pink

  • Limestone classification

    CommonName
    Limestone
    Species
    NA
    Variety
    Colors
    White, Gray, Pink
    AlternateNames
    GemstoneGroups
    KeySeparations
    ClassificationComments
    Limestone is a sedimentary rock formed mostly from the skeletal remains of marine organisms. Due to impurities limestone can have a banded appearance. It is not uncommon for limestone to contain fossil material.
  • Limestone chemistry & crystallography

    ChemicalName
    ChemicalFormula
    calcite, aragonite, dolomite, siderite, quartz and pyrite
    Synthesis
    CrystalSystem
    NA
    ChemistryClassification
    Rock
    Nature
    Natural
    Crystallinity
    Aggregate
    ChemistryComments
  • Limestone optical properties

    Transparency
    Opaque
    Dispersion
    OpticalComments
    RefractiveIndex
    Birefringence
    OpticCharacter
    OpticSign
    PolariscopeReaction
    Fluorescence
    SWUV:
    LWUV:
    CCFReaction
    Pleochroism
    None
  • Limestone characteristic physical properties

    Hardness
    CharacteristicComments
    Streak
    SpecificGravity
    Toughness
    Inclusions
    Luster
    Dull
    Stability
    Fracture
    Cleavage
    None