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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Your choice

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 545–560 of 639 results

  • Spinel

    Spinel

    2,289 ct. | VII/A
    GLA
    €500.00
  • Spinel

    Spinel

    1,998 ct. | V/A
    GLA
    €900.00
  • Spinel

    Spinel

    2,565 ct. | VI/C
    GLA
    €1,000.00
  • Spinel

    Spinel

    4,243 ct. | VII/C
    GLA
    €2,000.00
  • Spinel

    Spinel

    3,883 ct. | VII/B
    GLA
    €1,800.00
  • Spinel

    Spinel

    2,173 ct. | VI/C
    GLA
    €1,000.00
  • Spinel

    Spinel

    1,524 ct. | II/C
    64839-1
    €7,400.00
  • Spinel

    Spinel

    1,069 ct. | II/B
    64840-1
    €6,800.00
  • Spinel

    Spinel

    1,489 ct. | III/C
    64843-1
    €3,300.00
  • Spinel

    Spinel

    1,121 ct. | III/C
    64844-1
    €4,000.00
  • Spinel

    Spinel

    1,014 ct. | II/C
    64847-1
    €5,400.00
  • Spinel

    Spinel

    1,144 ct. | II/C
    64846-1
    €5,800.00
  • Spinel

    Spinel

    1,067 ct. | II/C
    64852-1
    €5,700.00
  • Spinel

    Spinel

    1,607 ct. | IV/C
    64848-1
    €5,800.00
  • Spinelle

    Spinelle

    3,241 ct. | IV/C
    50943
    €3,600.00
  • Tansanite

    Tansanite

    6,162 ct. | II/A
    61667-2
    €6,200.00

Facts

properties of tanzanite

  • Belongs mineralogically to zoisite
  • Hardness grade 6,5-7
  • Chemical formula: Ca2Al3(SiO4)3OH
  • Includes the colors blue, violet and brown
  • By heating it develops its famous blue color
  • Density from 3,29 - 3,4

origin

worth knowing

  • Only place of discovery: Tanzania
  • Tanzania locality was discovered in 1967
  • Was mineralogically known as "Zoisite" for a long time
  • Became known worldwide through the movie "Titanic"

Tanzanite as an investment

  • Rare, strongly increasing in value
  • finds become less, because there is only 1 mining area
  • rather bigger stones are preferable
  • Larger stones have higher increase in value
  • stones with deep blue color are to be preferred
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