• 14 days return

  • Free shipping

  • Diamond expert team

toto
The diamantaire store
Guy
Diamantaire since 1966
Member of the Diamond Exchange of New York

About the diamantaire seller


With more than 40 years of expertise in diamond-jewelry manufacturing, we have established a trusted name in diamonds.
We provide the highest quality of fine diamonds and diamond jewelry to satisfied customers around the world.

Our skilled artisans, state-of-the-art manufacturing factories and reputable distribution offices worldwide specialize in supplying, manufacturing and distributing certified diamonds of all shapes and clarities, ranging from 0.30 carats to 10 carats, and specializing in 0.50 carats to 3 carats.

Our family-run company is committed to maintaining stringent ethical and quality standards and a fully transparent diamond supply chain. Sourcing conflict-free rough diamonds from Africa, Russia and Canada, we use the latest innovative diamond technologies in our manufacturing to constantly develop new and exclusive jewelry lines.

Our dynamic company also offers both digital and online access to our expansive diamond inventory, including high-resolution photographs of each diamond.

This enables our customers to easily find, choose and order from our wide range of breathtaking diamonds and jewelry collections – anywhere, any time.

With overnight worldwide delivery, our unparalleled customer service prioritizes customer satisfaction.

At our company, we truly value our customers and not only meet - but exceed - all of your diamond needs.

View as

  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    0.28 carat Marquise diamond J SI2

    $313 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    0.35 carat Round diamond K IF Very good

    $448 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    0.41 carat Radiant diamond D I1

    $466 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    0.40 carat Round diamond Yellow SI1 Very good

    $477 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    0.39 carat Princess diamond I VS2

    $480 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    0.40 carat Princess diamond I SI1

    $503 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    0.41 carat Round diamond H SI2 Excellent

    $514 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    0.40 carat Round diamond H SI2 Very good

    $520 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    0.50 carat Round diamond G I1 Excellent

    $524 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    0.61 carat Radiant diamond Yellow I1

    $546 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    0.56 carat Round diamond G I1 Excellent

    $578 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    0.46 carat Round diamond E SI2 Very good

    $579 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    0.51 carat Princess diamond G I1

    $587 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    0.65 carat Pear diamond M SI1

    $592 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    0.35 carat Emerald diamond E IF

    $635 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    0.40 carat Round diamond G VS2 Good

    $647 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    0.43 carat Princess diamond H SI1

    $650 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    0.45 carat Princess diamond F SI1

    $654 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    0.37 carat Round diamond D SI1 Excellent

    $658 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    0.41 carat Round diamond G VS2 Good

    $662 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    0.61 carat Round diamond F I1 Good

    $662 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    0.46 carat Emerald diamond J VS1

    $682 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    0.51 carat Pear diamond D I1

    $697 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    0.40 carat Round diamond G VS2 Very good

    $701 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    0.68 carat Radiant diamond M SI1

    $718 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    0.57 carat Pear diamond I SI2

    $752 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    0.51 carat Emerald diamond I SI2

    $768 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    0.50 carat Marquise diamond I SI1

    $786 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    0.40 carat Round diamond E SI1 Good

    $793 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    0.70 carat Radiant diamond M SI2

    $795 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    0.41 carat Round diamond H IF Very good

    $806 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    0.41 carat Emerald diamond E VVS2

    $807 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    0.70 carat Radiant diamond I I1

    $828 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    0.70 carat Pear diamond L SI2

    $828 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    0.56 carat Pear diamond E SI2

    $839 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    0.57 carat Round diamond H SI2 Excellent

    $843 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    0.51 carat Emerald diamond J VVS1

    $851 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    0.62 carat Princess diamond I SI2

    $853 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.00 carat Round diamond L SI1 Good

    $854 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    0.71 carat Cushion diamond M VS2

    $865 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    0.59 carat Emerald diamond G SI1

    $887 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    0.72 carat Emerald diamond L SI1

    $901 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    0.50 carat Round diamond I VS1 Excellent

    $902 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    0.51 carat Pear diamond F SI2

    $914 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    0.63 carat Round diamond G SI2 Excellent

    $931 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    0.70 carat Princess diamond M VS2

    $938 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    0.50 carat Cushion diamond I VVS2

    $943 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    0.71 carat Radiant diamond I SI2

    $978 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    0.51 carat Cushion diamond H VVS2

    $982 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    0.40 carat Round diamond E VS2 Good

    $985 USD
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