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  • Black Spinel
  • Black Spinel
  • Black Spinel
  • Black Spinel
  • Black Spinel

    Shape
    • Main chemical composition: Refractive index of iron-magnesium-aluminum oxide:1.712-1.736
    • Hardness: 8 Mohs
    • Melting point: 1800℃, high temperature resistant, can be wax set
    • Original: Thailand
    • Spinel is a hard vitreous magnesium aluminum oxide that has been used as a gemstone for centuries. It can be the high temperature for heating and wax casting in Jewelry. 

    Product Details

    Color Separation Standards

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