• 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

    1.01 carat Cushion diamond Yellow SI1

    $2,161 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.08 carat Radiant diamond Yellow VVS1

    $3,793 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    2.01 carat Cushion diamond Yellow VS1

    $5,057 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1 carat Radiant diamond Yellow VS2

    $2,829 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.25 carat Radiant diamond Yellow SI1

    $2,141 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.45 carat Radiant diamond Yellow SI2

    $3,469 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.75 carat Oval diamond Yellow SI2

    $4,172 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.02 carat Oval diamond Yellow SI1

    $1,620 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.05 carat Cushion diamond Yellow SI1

    $1,882 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    2.05 carat Round diamond Yellow VVS2

    $6,003 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.01 carat Round diamond E SI2 Excellent

    $3,896 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.05 carat Radiant diamond Yellow SI2

    $3,356 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.71 carat Radiant diamond Yellow VS2

    $5,491 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.32 carat Cushion diamond Yellow SI2

    $1,893 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.36 carat Cushion diamond Yellow SI1

    $1,948 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

    1.5 carat Cushion diamond Yellow SI2

    $7,511 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    2.5 carat Cushion diamond Yellow SI2

    $5,927 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.1 carat Oval diamond Yellow SI2

    $3,407 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.45 carat Cushion diamond Yellow SI1

    $6,065 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.5 carat Round diamond H VVS1 Very good

    $10,554 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1 carat Round diamond G VS1 Very good

    $5,610 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.23 carat Round diamond E VVS2 Very good

    $9,128 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.27 carat Cushion diamond Yellow VS1

    $6,196 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

    2.52 carat Cushion diamond Yellow VS2

    $7,015 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.09 carat Round diamond E VS2 Excellent

    $5,961 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    2.19 carat Pear diamond Yellow SI1

    $7,313 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    2.02 carat Pear diamond Yellow SI2

    $6,194 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    0.95 carat Cushion diamond Yellow I1

    $1,383 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    2.04 carat Radiant diamond Yellow SI1

    $6,395 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

    1 carat Round diamond J VVS1 Very good

    $3,782 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.33 carat Cushion diamond Yellow VS2

    $1,906 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.01 carat Round diamond E VS1 Very good

    $6,014 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    0.71 carat Round diamond J VS1 Excellent

    $1,938 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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  • 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

    1 carat Round diamond E VS1 Very good

    $6,357 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    0.91 carat Round diamond E I1 Excellent

    $1,377 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.01 carat Round diamond E VS2 Very good

    $5,202 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    2.39 carat Round diamond G SI2 Excellent

    $15,556 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

    0.65 carat Pear diamond M SI1

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

    0.9 carat Princess diamond L I1

    $1,054 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1 carat Round diamond G SI2 Excellent

    $3,523 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    0.81 carat Princess diamond M SI2

    $1,033 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    0.7 carat Radiant diamond M SI2

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

    0.5 carat Round diamond I VS1 Excellent

    $944 USD
    View details
  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    0.72 carat Emerald diamond L SI1

    $884 USD
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