Hambergite Gemstone & Information | Gemopedia by JTV | Gemopedia™

Hambergite

Hambergite is an often colorless gemstone named in honor of Swedish mineralogist A. Hamberg. While it is durable enough to wear in jewelry, hambergite is most commonly seen in specimen form. Rarely is a specimen flawless, and it can be easily confused with colorless quartz since they are similar in appearance. A unique characteristic of hambergite is its prefect cleavage that makes faceting into a gemstone very difficult for cutters.

Colors

Colorless, Gray To White, Yellow To White

  • Hambergite classification

    CommonName
    Hambergite
    Species
    Hambergite
    Variety
    Colors
    Colorless, Gray To White, Yellow To White
    AlternateNames
    GemstoneGroups
    KeySeparations
    RI, birefringence and SG
    ClassificationComments
  • Hambergite chemistry & crystallography

    ChemicalName
    ChemicalFormula
    Be2BO3(OH)
    Synthesis
    CrystalSystem
    Orthorhombic
    ChemistryClassification
    Borate
    Nature
    Natural
    Crystallinity
    Crystalline
    ChemistryComments
  • Hambergite optical properties

    Transparency
    Transparent - Translucent
    Dispersion
    Strength: weak fire Value: 0.015
    OpticalComments
    RefractiveIndex
    1.553-1.628
    Birefringence
    0.071-0.074
    OpticCharacter
    Biaxial
    OpticSign
    Positive
    PolariscopeReaction
    Doubly Refractive (DR)
    Fluorescence
    SWUV: inert to weak yellowish white
    LWUV: Inert to weak orange
    CCFReaction
    Pleochroism
    Unobservable
  • Hambergite characteristic physical properties

    Hardness
    7.5
    CharacteristicComments
    Streak
    White
    SpecificGravity
    2.33-2.37 Typical:2.35
    Toughness
    Poor
    Inclusions
    Luster
    Vitreous
    Stability
    Fracture
    Conchoidal
    Cleavage
    Perfect, in one direction, Good, in one direction