Unknown origin

Your gemstone search

Showing 17–32 of 333 results

  • Aquamarine pair

    Aquamarine pair

    6,767 ct. | V/A
    GLA
    €2,400.00
  • Bastnaesite

    Bastnaesite

    2,825 ct. | IV/D
    GLA
    €500.00
  • Bastnäsite

    Bastnäsite

    2,829 ct. | IV/D
    GLA
    €500.00
  • Bastnäsite

    Bastnäsite

    3,034 ct. | IV/D
    GLA
    €600.00
  • Bastnäsite

    Bastnäsite

    3,275 ct. | III/D
    GLA
    €500.00
  • Bastnäsite

    Bastnäsite

    3,468 ct. | III/C
    GLA
    €800.00
  • Bastnäsite

    Bastnäsite

    3,878 ct. | IV/D
    GLA
    €1,000.00
  • Bastnäsite

    Bastnäsite

    2,3 ct. | IV/C
    GLA
    €500.00
  • Bastnäsite

    Bastnäsite

    2,78 ct. | IV/C
    GLA
    €600.00
  • Beryl

    Beryl

    32,111 ct. | IV/D
    GLA
    €4,900.00
  • Beryl

    Beryl

    36,711 ct. | III/C
    GLA
    €7,000.00
  • Blue Sapphire

    Blue Sapphire

    0,857 ct. | VI/D
    GLA
    €500.00
  • Blue Sapphire

    Blue Sapphire

    19,337 ct. | VI/E
    GLA GÜB CGL
    €44,000.00
  • Blue Sapphire

    Blue Sapphire

    0,95 ct. | VI/C
    GLA TGL
    €700.00
  • Blue Sapphire

    Blue Sapphire

    1,118 ct. | VI/C
    GLA TGL
    €900.00
  • Blue Sapphire

    Blue Sapphire

    1,727 ct. | VI/C
    GLA
    €1,300.00

Facts

properties of sapphire

  • Belongs mineralogically to corundum
  • Hardness grade 9
  • Chemical formula: Al2O3
  • Includes all colors except red, red corundum is called "ruby
  • Coloration generally by metal oxides (e.g. blue: titanium oxide)
  • High density of 3.9 - 4.1

origin

worth knowing

  • Oldest known locality: Burma
  • The legendary place of discovery: "Kashmir"
  • Assigned to the planet Saturn
  • Besides blue, pink sapphire is especially sought after: "hot pink".
  • The most recently discovered localities are Madagascar and Ethiopia

investment in sapphire

  • second most suitable of all gemstones for investment
  • less rare than ruby but also strongly increasing in value
  • Stones should have at least 1 ct weight, better from 3 ct.
  • larger stones have higher increase in value
  • Experts reckon with 6% increase in value per year
  • beautiful sparkling sapphires are preferable
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