• Direct to diamantaires

  • Amazing value

  • 100% Ethically sourced

  • Diamond expert guidance

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

    $287 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    0.35 carat Round diamond K IF Very good

    $408 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    0.41 carat Radiant diamond D I1

    $420 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    0.4 carat Round diamond Yellow SI1 Very good

    $433 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    0.39 carat Princess diamond I VS2

    $435 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    0.4 carat Princess diamond I SI1

    $455 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    0.5 carat Round diamond G I1 Excellent

    $472 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    0.41 carat Round diamond H SI2 Excellent

    $493 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    0.61 carat Radiant diamond Yellow I1

    $495 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    0.36 carat Round diamond I VS1 Very good

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

    0.51 carat Princess diamond G I1

    $528 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    0.65 carat Pear diamond M SI1

    $531 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    0.46 carat Round diamond E SI2 Very good

    $543 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    0.56 carat Round diamond G I1 Excellent

    $551 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    0.58 carat Round diamond F I1 Good

    $568 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    0.35 carat Emerald diamond E IF

    $571 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    0.57 carat Round diamond G I1 Good

    $581 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    0.43 carat Princess diamond H SI1

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

    0.45 carat Princess diamond F SI1

    $589 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    0.61 carat Round diamond F I1 Good

    $594 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    0.40 carat Round diamond H SI2 Very good

    $600 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    0.46 carat Emerald diamond J VS1

    $615 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    0.55 carat Round diamond G I1 Very good

    $616 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    0.55 carat Round diamond G I1 Very good

    $616 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    0.51 carat Pear diamond D I1

    $637 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    0.68 carat Radiant diamond M SI1

    $644 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    0.57 carat Pear diamond I SI2

    $687 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    0.51 carat Emerald diamond I SI2

    $691 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    0.7 carat Radiant diamond M SI2

    $714 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    0.50 carat Marquise diamond I SI1

    $717 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    0.40 carat Round diamond E SI1 Good

    $725 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    0.41 carat Emerald diamond E VVS2

    $725 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    0.7 carat Pear diamond L SI2

    $741 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    0.7 carat Radiant diamond I I1

    $741 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    0.71 carat Cushion diamond M VS2

    $751 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    0.57 carat Round diamond H SI2 Excellent

    $757 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    0.51 carat Emerald diamond J VVS1

    $764 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    0.56 carat Pear diamond E SI2

    $764 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    0.62 carat Princess diamond I SI2

    $766 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    0.51 carat Round diamond Yellow VVS1 Very good

    $777 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.00 carat Round diamond L SI1 Good

    $784 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    0.59 carat Emerald diamond G SI1

    $794 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    0.40 carat Round diamond G VS2 Good

    $820 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    0.41 carat Round diamond G VS2 Good

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

    0.7 carat Princess diamond M VS2

    $840 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    0.77 carat Pear diamond L SI2

    $855 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    0.51 carat Pear diamond F SI2

    $858 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    0.41 carat Round diamond H IF Very good

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

    0.72 carat Emerald diamond L SI1

    $884 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    0.56 carat Emerald diamond J VVS1

    $899 USD
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