• <span>GLA55176</span>
  • <span>SAP_BLU_7.528_Kissen_KAS_SSEF114257_GLA55176_000002</span>
  • <span>SAP_BLU_7.528_Kissen_KAS_SSEF114257_GLA55176_000003</span>
  • <span>SAP_BLU_7.520_Kissen_KAS_GUB21030115_55176_000001</span>
  • <span>SAP_BLU_7.520_Kissen_KAS_GRS2020_020855_GLA55176_000001</span>

Blue sapphire

Item Number: 2021-0067

Price on request

In stock

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Price on request
7,528 ct.
Color Quality:
very good (II)
smallest inclusions (B)


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


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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