Unknown origin

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Showing 257–272 of 342 results

  • Spinel

    Spinel

    1,076 ct. | V/C
    GLA
    €416.67
  • Spinel

    Spinel

    1,302 ct. | V/B
    GLA
    €541.67
  • Spinel

    Spinel

    1,439 ct. | VI/C
    GLA
    €416.67
  • Spinel

    Spinel

    1,249 ct. | V/C
    GLA
    €416.67
  • Spinel

    Spinel

    2,120 ct. | VII/C
    GLA
    €500.00
  • Spinel

    Spinel

    1,988 ct. | VI/C
    GLA
    €650.00
  • Spinel

    Spinel

    1,739 ct. | VI/B
    GLA
    €575.00
  • Spinel

    Spinel

    1,562 ct. | VI/B
    GLA
    €516.67
  • Spinel

    Spinel

    1,640 ct. | VII/C
    GLA
    €416.67
  • Spinel

    Spinel

    1,621 ct. | VI/A
    GLA
    €600.00
  • Spinel

    Spinel

    1,536 ct. | VI/C
    GLA
    €416.67
  • Spinel

    Spinel

    1,401 ct. | VI/C
    GLA
    €416.67
  • Spinel

    Spinel

    1,172 ct. | V/B
    GLA
    €416.67
  • Spinel

    Spinel

    1,152 ct. | V/C
    GLA
    €416.67
  • Spinel

    Spinel

    1,662 ct. | V/C
    GLA
    €583.33
  • Spinel

    Spinel

    1,355 ct. | VI/C
    GLA
    €416.67

Facts

properties of spinel

  • Own mineralogical group
  • Hardness grade 8
  • Chemical formula: MgAl2O4
  • Includes almost all colors
  • Colored by different metal oxides
  • High density of the mineral: 3.6 - 4.1

origin

  • Burma
  • Vietnam
  • Tadschikistan
  • Sri Lanka
  • Afghanistan

worth knowing

  • Oldest known locality: Burma
  • Has been confused with ruby for a long time
  • Some of the most important "rubies" in the world are therefore spinels
  • Spinel can be distinguished from ruby by its crystal system and refraction of light
  • Gives courage and confidence
  • Most important place of discovery is still Burma

investment in spinel

  • Outsider in the investment field, which will quickly increase in value
  • Rare, rapidly increasing in value
  • Stones should have at least 2 ct weight
  • Larger, luminous stones have higher increase in value
  • Experts expect 8 - 10% increase in value per year
  • Beautiful sparkling spinels are to be preferred
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