Color change

Your gemstone search

Showing all 15 results

  • Alexandrite

    Alexandrite

    1,272 ct. | VII/C
    GLA
    €1,500.00
  • Alexandrite

    Alexandrite

    0,673 ct. | VIII/C
    GLA PGL
    €800.00
  • Alexandrite

    Alexandrite

    1,107 ct. | VIII/D
    GLA LGL
    €1,500.00
  • Alexandrite

    Alexandrite

    1,257 ct. | VIII/C
    GLA LGL
    €1,800.00
  • Alexandrite

    Alexandrite

    0,883 ct. | VI/D
    GLA LGL
    €1,600.00
  • Alexandrite

    Alexandrite

    1,597 ct. | VIII/D
    GLA LGL
    €2,600.00
  • Color change sapphire

    Color change sapphire

    7,04 ct. | V/C
    GLA GÜB
    €34,500.00
  • Color Change Sapphire

    Color Change Sapphire

    10,541 ct. | V/D
    GLA GÜB CGL
    €63,000.00
  • Colorchange Sapphire

    Colorchange Sapphire

    2,205 ct. | VI/C
    GLA
    €1,400.00
  • Colorchange Sapphire

    Colorchange Sapphire

    5,316 ct. | VI/C
    GLA
    €4,800.00
  • Opal

    Opal

    63,525 ct. | III/A
    GLA
    €21,000.00
  • Opal

    Opal

    45,125 ct. | III/A
    GLA
    €15,000.00
  • Sapphire

    Sapphire

    11,420 ct. | V/D
    GLA
    €60,000.00
  • Sapphire

    Sapphire

    10,541 ct. | V/D
    GLA
    €63,000.00
  • Sapphire

    Sapphire

    1,148 ct. | VI/C
    GLA
    €850.00

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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