• 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

    1.33 carat Pear diamond D SI2

    $5,127.54 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    4.01 carat Emerald diamond E VS1

    $116,481.29 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.13 carat Princess diamond E I1

    $5,103.05 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.01 carat Emerald diamond F SI1

    $6,535.26 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    0.9 carat Round diamond G VVS2 Excellent

    $8,209.43 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    0.37 carat Round diamond D SI1 Excellent

    $1,052.52 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.01 carat Oval diamond J VS1

    $2,965.62 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    5.14 carat Emerald diamond J VS2

    $74,345.43 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.59 carat Oval diamond E VS1

    $12,036.50 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    2 carat Oval diamond H VS2

    $20,811.00 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.52 carat Round diamond H SI2 Excellent

    $7,573.01 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.5 carat Round diamond I SI2 Very good

    $7,124.03 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.5 carat Round diamond H SI2 Very good

    $8,622.53 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.5 carat Round diamond H SI1 Excellent

    $10,402.50 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.2 carat Oval diamond H SI2

    $3,765.36 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.05 carat Round diamond I SI1 Excellent

    $3,519.53 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.13 carat Oval diamond K VS2

    $2,675.98 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.5 carat Marquise diamond G VS2

    $11,305.65 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.2 carat Round diamond H SI1 Excellent

    $5,583.00 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.51 carat Princess diamond I VVS1

    $10,124.81 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.68 carat Oval diamond E VS1

    $14,417.83 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    5.01 carat Round diamond F SI2 Excellent

    $111,317.04 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.94 carat Princess diamond H VS2

    $16,181.85 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    2.01 carat Radiant diamond I VS1

    $16,844.43 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.73 carat Emerald diamond I VS1

    $10,776.26 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    2.04 carat Pear diamond E VVS2

    $30,148.68 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.61 carat Princess diamond I VVS1

    $10,236.11 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.17 carat Heart diamond H SI2

    $2,673.28 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1 carat Round diamond G VVS2 Very good

    $6,757.50 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1 carat Round diamond H VS2 Excellent

    $5,345.40 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1 carat Round diamond G VVS2 Very good

    $6,757.50 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    2.08 carat Round diamond G VS1 Excellent

    $27,874.20 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.06 carat Round diamond M SI2 Excellent

    $1,852.30 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    0.92 carat Round diamond I SI2 Excellent

    $1,587.76 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.01 carat Cushion diamond G SI2

    $2,976.53 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    2.06 carat Round diamond F SI2 Excellent

    $16,494.02 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    0.35 carat Round diamond K IF Very good

    $408.11 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    0.33 carat Princess diamond D VVS1

    $598.46 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.9 carat Radiant diamond H SI2

    $8,408.69 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.2 carat Oval diamond I VS2

    $4,667.70 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.02 carat Round diamond F I1 Very good

    $2,652.74 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.1 carat Round diamond H VS2 Excellent

    $5,587.32 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.01 carat Round diamond I SI1 Excellent

    $3,572.38 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.2 carat Round diamond H VS1 Excellent

    $6,765.60 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    0.92 carat Oval diamond H SI1

    $2,664.42 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    0.81 carat Oval diamond H VS2

    $2,389.93 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1 carat Round diamond G SI1 Very good

    $3,576.90 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    3.33 carat Round diamond L SI1 Excellent

    $26,544.50 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    2 carat Oval diamond G VS2

    $22,377.00 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.2 carat Emerald diamond G SI1

    $4,813.50 USD
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