Melo Pearl Gemstone & Information | Gemopedia by JTV | Gemopedia™

Melo Pearl

The melo pearl comes from the melo melo sea snail, a group of sea snails with scroll-like volute shells found along in the South China Sea. The melo pearl is a non-nacreous pearl with colors ranging from light tan to brown, but orange is the most sought-after color. Melo pearls are extremely rare, as no harvesting techniques exist.

Colors

Orange To Red-Orange

  • Melo-pearl classification

    CommonName
    Melo Pearl
    Species
    NA
    Variety
    Melo Pearl
    Colors
    Orange To Red-Orange
    AlternateNames
    Melo Melo Pearl
    GemstoneGroups
    KeySeparations
    RI, birefringence blink, magnification and appearance.
    ClassificationComments
    Use birefringence blink method to obtain birefringence. Come from the Melo melo snail. Melo pearls are not considered true pearls. Melo pearls typically weigh less than conch pearls.
  • Melo-pearl chemistry & crystallography

    ChemicalName
    Calcium carbonate, conchiolin and water
    ChemicalFormula
    CaCO3 with H2O and other organic materials
    Synthesis
    CrystalSystem
    NA
    ChemistryClassification
    Carbonate
    Nature
    Natural
    Crystallinity
    Aggregate
    ChemistryComments
  • Melo-pearl optical properties

    Transparency
    Translucent - Opaque
    Dispersion
    OpticalComments
    RefractiveIndex
    1.53-1.685
    Birefringence
    0.155
    OpticCharacter
    OpticSign
    PolariscopeReaction
    Aggregate (AGG)
    Fluorescence
    SWUV: Variable
    LWUV: Variable
    CCFReaction
    Pleochroism
    None
  • Melo-pearl characteristic physical properties

    Hardness
    2.5-4
    CharacteristicComments
    Streak
    SpecificGravity
    2.87-2.83 Typical:2.85
    Toughness
    Fair
    Inclusions
    Melo pearls have a flame like structure and does not have nacre but a porcelain like finish.
    Luster
    Dull
    Stability
    Poor
    Fracture
    Uneven
    Cleavage
    None