Gemstone Online Shop

Buy untreated, natural colored, investment-grade gemstones in our online store. All our gemstones available for purchase are accompanied by certificates from internationally recognized gemological institutes.

You can easily buy our gems directly online, or submit inquiries regarding specific stones.

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The photos presented here by The Natural Gem show each gemstone as it is. The photos are not post-processed, color changed and the gemstones are not optically optimized in their purity.

Showing 481–496 of 639 results

  • Sapphire

    Sapphire

    2,062 ct. | III/D
    64388-1
    €6,000.00
  • Sapphire

    Sapphire

    1,715 ct. | V/D
    64827-1
    €2,800.00
  • Sapphire

    Sapphire

    1,805 ct. | II/D
    64974-1
    €7,200.00
  • Sapphire

    Sapphire

    2,446 ct. | III/C
    63657-1
    €10,600.00
  • Sapphire - reddish brown

    Sapphire - reddish brown

    1,014 ct. | V/C
    GLA
    €600.00
  • Spessartin

    Spessartin

    18,028 ct. | VI/A
    GLA
    €4,800.00
  • Spessartite

    Spessartite

    5,051 ct. | V/A
    GLA
    €1,500.00
  • Spessartite

    Spessartite

    5,514 ct. | IV/B
    GLA
    €1,900.00
  • Spessartite

    Spessartite

    5,622 ct. | IV/C
    GLA
    €1,700.00
  • Spessartite

    Spessartite

    6,173 ct. | V/A
    GLA
    €1,900.00
  • Spessartite

    Spessartite

    6,996 ct. | V/A
    GLA
    €2,100.00
  • Spinel

    Spinel

    1,762 ct. | V/B
    GLA
    €1,000.00
  • Spinel

    Spinel

    2,205 ct. | IV/D
    GLA
    €1,100.00
  • Spinel

    Spinel

    2,392 ct. | V/C
    GLA
    €1,500.00
  • Spinel

    Spinel

    1,94 ct. | IV/B
    GLA
    €1,300.00
  • Spinel

    Spinel

    2,519 ct. | VI/B
    GLA
    €1,200.00

Facts

properties of spinel

  • Own mineralogical group
  • Hardness grade 8
  • Chemical formula: MgAl2O4
  • Includes almost all colors
  • Colored by different metal oxides
  • High density of the mineral: 3.6 - 4.1

origin

  • Burma
  • Vietnam
  • Tadschikistan
  • Sri Lanka
  • Afghanistan

worth knowing

  • Oldest known locality: Burma
  • Has been confused with ruby for a long time
  • Some of the most important "rubies" in the world are therefore spinels
  • Spinel can be distinguished from ruby by its crystal system and refraction of light
  • Gives courage and confidence
  • Most important place of discovery is still Burma

investment in spinel

  • Outsider in the investment field, which will quickly increase in value
  • Rare, rapidly increasing in value
  • Stones should have at least 2 ct weight
  • Larger, luminous stones have higher increase in value
  • Experts expect 8 - 10% increase in value per year
  • Beautiful sparkling spinels are to be preferred
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