Spinel Facts

    Spinel Facts

    Spinel Facts

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    Spinel  Properties

    Chemical CompositionIt is Magnesium Aluminum Oxide having the chemical formula MgAl2O4.
    ColoursRed, blue, green, orange, mauve, violet, yellow, purple, brown and black.
    StreakWhite or grayish white.
    Refractive Index1.71 – 1.76 (approx)
    Specific Gravity3.58-3.73
    LusterVitreous.
    Solid StateTransparent to translucent and sometimes nearly opaque.
    Crystal SystemIsometric – Cubic Hexagonal crystal system.
    Hardness8 Mohs.
    ClevageNone
    FracturesUneven to conchoidal.
    Bi-refringenceNone
    LuminescenceSometimes fluorescent.
    TenacityBrittle
    Synthetic AvailabilitySynthetic stones are available.
    EnhancementNot enhanced.
    SourceMyanmar (Burma), Afghanistan, Madagascar, Pakistan, Australia, Italy, Sri Lanka (Ceylon), Brazil, Tanzania, Sweden, Turkey, Russia and United States.
    PrecautionsOnly general gemstone precautions required.
    admin March 9, 2016 Spinel