• 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

    0.60 carat Round diamond H VS1 Very good

    $1,526 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    0.80 carat Radiant diamond J SI1

    $1,130 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    0.80 carat Pear diamond G SI2

    $1,506 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    0.70 carat Emerald diamond H VS1

    $1,448 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    0.68 carat Marquise diamond I VS2

    $951 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 Round diamond H VVS2 Excellent

    $1,131 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    0.50 carat Marquise diamond G VVS2

    $1,035 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.53 carat Round diamond J SI2 Good

    $6,922 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    0.70 carat Marquise diamond G VS2

    $1,769 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    0.70 carat Marquise diamond D SI1

    $1,563 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    0.71 carat Heart diamond J SI2

    $987 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    0.70 carat Marquise diamond K VS2

    $979 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    0.51 carat Cushion diamond H VVS2

    $1,084 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    0.53 carat Marquise diamond I VS1

    $934 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    0.73 carat Pear diamond I VVS2

    $1,520 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    0.51 carat Round diamond J SI2 Very good

    $827 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

    0.91 carat Radiant diamond G VS1

    $3,123 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

    0.70 carat Radiant diamond J VS2

    $1,269 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    2.02 carat Pear diamond G VS2

    $20,691 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.90 carat Radiant diamond H SI2

    $8,116 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    3.01 carat Round diamond F VS2 Very good

    $46,561 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.01 carat Pear diamond D VVS2

    $5,687 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.58 carat Round diamond I VVS2 Excellent

    $9,972 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.52 carat Emerald diamond I VS1

    $7,905 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.51 carat Oval diamond F SI2

    $7,524 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    2.03 carat Round diamond L VVS1 Excellent

    $12,092 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    2.01 carat Emerald diamond J VS2

    $11,776 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.5 carat Marquise diamond G VS2

    $10,718 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    2 carat Pear diamond J SI2

    $11,658 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.33 carat Pear diamond D SI2

    $4,977 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    4.01 carat Emerald diamond E VS1

    $109,548 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.24 carat Round diamond L I1 Very good

    $1,530 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.2 carat Round diamond J VS1 Excellent

    $4,397 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.5 carat Oval diamond G I1

    $3,104 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.52 carat Oval diamond H I1

    $4,021 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.7 carat Heart diamond I SI2

    $10,021 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.72 carat Heart diamond G SI2

    $10,648 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    2.1 carat Round diamond K SI1 Excellent

    $16,969 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    3.02 carat Round diamond I SI1 Fair

    $21,727 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    2.01 carat Round diamond G VVS1 Excellent

    $50,842 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.74 carat Round diamond I SI2 Excellent

    $11,996 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    2 carat Round diamond M SI2 Good

    $10,308 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.02 carat Round diamond H SI1 Excellent

    $6,843 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.03 carat Round diamond H SI1 Excellent

    $7,838 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    2.1 carat Round diamond D I1 Very good

    $19,410 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    3.01 carat Radiant diamond J VS2

    $18,759 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.05 carat Round diamond I SI1 Excellent

    $3,711 USD
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