Unknown origin

Your gemstone search

Showing 177–192 of 342 results

  • Rubellite

    Rubellite

    8,295 ct. | II/D
    47142
    €4,800.00
  • Ruby

    Ruby

    3,672 ct. | IV/E
    GLA
    €31,500.00
  • Ruby

    Ruby

    2,017 ct. | III/E
    GLA
    €15,800.00
  • Ruby

    Ruby

    1,097 ct. | III/C
    GLA
    €9,000.00
  • Ruby

    Ruby

    5,464 ct. | VII/F
    GLA
    €8,600.00
  • Ruby

    Ruby

    2,536 ct. | V/D
    63539-1
    €13,500.00
  • Sapphire

    Sapphire

    6,387 ct. | V/D
    GLA
    €24,000.00
  • Sapphire

    Sapphire

    14,281 ct. | V/F
    GLA
    €29,000.00
  • Sapphire

    Sapphire

    10,247 ct. | V/D
    GLA
    €37,000.00
  • Sapphire

    Sapphire

    8,601 ct. | V/D
    GLA
    €33,000.00
  • Sapphire

    Sapphire

    7,091 ct. | IV/C
    GLA
    €50,000.00
  • Sapphire

    Sapphire

    9,541 ct. | IV/D
    GLA
    €58,000.00
  • Sapphire

    Sapphire

    1,258 ct. | V/C
    GLA
    €1,600.00
  • Sapphire

    Sapphire

    5,285 ct. | IV/C
    GLA
    €26,000.00
  • Sapphire

    Sapphire

    8,327 ct. | V/D
    GLA
    €28,000.00
  • Sapphire

    Sapphire

    1,628 ct. | VII/C
    GLA
    €600.00

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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