Untreated

Your gemstone search

Showing 273–288 of 446 results

  • Ruby

    Ruby

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

    Ruby

    1,049 ct. | III/C
    GLA
    €10,600.00
  • Ruby

    Ruby

    1,350 ct. | IV/C
    GLA
    €8,200.00
  • Ruby

    Ruby

    1,964 ct. | V/C
    GLA
    €14,000.00
  • Ruby

    Ruby

    1,412 ct. | IV/C
    GLA
    €10,700.00
  • Ruby

    Ruby

    1,515 ct. | IV/C
    GLA
    €12,500.00
  • Ruby

    Ruby

    1,545 ct. | IV/C
    GLA
    €9,700.00
  • Ruby

    Ruby

    1,584 ct. | IV/C
    GLA
    €10,500.00
  • Ruby

    Ruby

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

    Ruby

    4,061 ct. | II/D
    GLA
    €27,000.00
  • Ruby

    Ruby

    3,051 ct. | II/B
    GLA SSEF
    €Price on request
  • Ruby

    Ruby

    1,138 ct. | V/C
    GLA
    €5,400.00
  • Ruby

    Ruby

    3,140 ct. | V/D
    62476-1
    €21,000.00
  • Ruby

    Ruby

    2,028 ct. | V/C
    63663-1
    €13,000.00
  • Ruby

    Ruby

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

    Ruby

    1,522 ct. | V/C
    63670-1
    €5,900.00

Facts

attributes of a ruby

  • Belongs mineralogically to corundum
  • Hardness grade 9
  • Chemical formula: Al2O3
  • Includes only the color red
  • Colored by chromium oxide
  • High density of 3.9 - 4.1

origin

worth knowing

  • Oldest known locality: Burma
  • Was exchanged for emeralds by maharajas
  • The color red is equated with power
  • Assigned to the planet Mars
  • Increases the assertiveness
  • The location Mozambique was discovered only in 2007/08

ruby as investment

  • Highest suitability of all gemstones
  • Rare, strongly increasing in value
  • Stones should have a weight of at least 1 ct
  • Larger stones have higher increase in value
  • Experts reckon with 8% increase in value per year
  • Beautifully sparkling rubies are preferable
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