Antique oval

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Showing 33–48 of 111 results

  • Pinksapphire

    Pinksapphire

    0,938 ct. | VI/C
    GLA
    €416.67
  • Pinksapphire

    Pinksapphire

    1,024 ct. | V/D
    GLA
    €500.00
  • Pinksapphire

    Pinksapphire

    0,847 ct. | V/C
    GLA
    €500.00
  • Pinksapphire

    Pinksapphire

    1,133 ct. | V/D
    GLA
    €708.33
  • Pinksapphire

    Pinksapphire

    1,050 ct. | VI/B
    GLA
    €625.00
  • Pinksapphire

    Pinksapphire

    1,546 ct. | IV/C
    GLA
    €1,750.00
  • Purple Sapphire

    Purple Sapphire

    1,658 ct. | V/C
    GLA
    €750.00
  • Purple Sapphire

    Purple Sapphire

    1,870 ct. | IV/D
    GLA
    €916.67
  • Purple Sapphire

    Purple Sapphire

    1,819 ct. | V/D
    GLA
    €583.33
  • Purple Sapphire

    Purple Sapphire

    5,911 ct. | VII/E
    GLA
    €1,666.67
  • Purple Sapphire

    Purple Sapphire

    3,320 ct. | VI/D
    GLA
    €1,083.33
  • Purple Sapphire

    Purple Sapphire

    2,533 ct. | IV/D
    GLA
    €1,250.00
  • Purple Sapphire

    Purple Sapphire

    2,090 ct. | V/C
    GLA
    €1,916.67
  • Purplesapphire

    Purplesapphire

    1,309 ct. | IV/D
    GLA
    €1,250.00
  • Rubellite

    Rubellite

    2,116 ct. | III/C
    GLA
    €416.67
  • Rubellite

    Rubellite

    2,055 ct. | III/C
    GLA
    €458.33

Facts

properties of tourmaline

  • Separate mineralogical group with many varieties
  • Hardness grade 7 - 7,5
  • Chemical formula: XY3Z6(T6O18)(BO3)3V3W(V, W, X, Y, Z stand for different possible elements)
  • Includes all colors
  • Colored by different metal oxides
  • Specific gravity 2.8 - 3.3 g/cm3

origin

  • Brasilia
  • Madagascar
  • Pakistan
  • Various locations in Europe
  • Mozambique
  • Namibia
  • Nigeria

worth knowing

  • Oldest known locality in modern trade: Brazil
  • Occurs in all colors
  • Forms beautiful crystals with very good crystal endings
  • Various esoteric and healing meanings
  • Also large crystals and large cut stones possible
  • The locality Pakistan was discovered only around 2010

investment in tourmaline

  • Still undervalued compared to other gemstones.
  • Exception: the Paraiba tourmaline, which can be more expensive than sapphire
  • Stones should be at least 5 ct in weight, except for Paraiba
  • Larger stones have higher appreciation
  • Experts calculate 6 - 8% increase in value per year
  • Beautiful, pure stones with clear colors are preferable
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