• 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

    1.04 carat Round diamond M SI1 Very good

    $2,041 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.05 carat Round diamond K VVS1 Very good

    $4,485 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.5 carat Round diamond M SI1 Excellent

    $4,846 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.73 carat Round diamond L VVS1 Excellent

    $9,298 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.08 carat Cushion diamond K I1

    $2,026 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.11 carat Round diamond F VS1 Excellent

    $7,244 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.51 carat Round diamond L VS2 Excellent

    $6,015 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.5 carat Round diamond K VS1 Very good

    $6,389 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.52 carat Cushion diamond H SI1

    $6,446 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.5 carat Princess diamond J VS2

    $6,887 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

    1.02 carat Round diamond G VS1 Good

    $5,156 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.31 carat Round diamond L SI1 Very good

    $1,854 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.02 carat Round diamond E VS2 Excellent

    $5,363 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.01 carat Round diamond G VS1 Very good

    $5,554 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1 carat Round diamond E VS2 Good

    $4,179 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.12 carat Round diamond E VS1 Excellent

    $7,410 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

    1 carat Round diamond E VS2 Excellent

    $5,151 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.01 carat Round diamond D VS2 Excellent

    $6,243 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.01 carat Round diamond E VS1 Very good

    $6,419 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.01 carat Round diamond D SI1 Very good

    $4,189 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.03 carat Cushion diamond L SI1

    $1,898 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.5 carat Round diamond G VVS2 Excellent

    $13,088 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    0.92 carat Princess diamond E VS1

    $3,893 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.2 carat Round diamond D SI1 Very good

    $6,156 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.5 carat Round diamond E VS1 Very good

    $13,304 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    2.01 carat Round diamond J IF Excellent

    $16,329 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.01 carat Round diamond D SI1 Excellent

    $5,194 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

    1.06 carat Round diamond E VS1 Excellent

    $7,017 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    2.09 carat Round diamond H SI2 Excellent

    $15,311 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.5 carat Round diamond K SI2 Excellent

    $5,154 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.07 carat Radiant diamond M SI2

    $1,427 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.01 carat Round diamond H VVS1 Good

    $4,174 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1 carat Round diamond E VS1 Excellent

    $6,357 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

    0.39 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

    1 carat Round diamond H SI2 Excellent

    $3,420 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.01 carat Round diamond F IF Good

    $8,526 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.5 carat Round diamond E SI1 Very good

    $9,973 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1 carat Round diamond E VVS2 Very good

    $6,965 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

    1.07 carat Round diamond E VS1 Excellent

    $7,082 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.01 carat Round diamond F VS2 Very good

    $5,188 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1 carat Oval diamond Yellow SI1

    $4,895 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.24 carat Radiant diamond Yellow VS2

    $2,295 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.01 carat Pear diamond Yellow VS1

    $1,674 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.34 carat Radiant diamond Yellow SI1

    $3,765 USD
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