• 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

    1.5 carat Round diamond G VS2 Very good

    $9,892 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    3 carat Round diamond D VVS2 Very good

    $76,710 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.5 carat Round diamond I SI1 Excellent

    $9,026 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    0.7 carat Round diamond E I1 Very good

    $1,097 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.01 carat Oval diamond E I1 Very good

    $1,908 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    0.68 carat Radiant diamond J VVS2

    $982 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.03 carat Oval diamond D SI2

    $3,779 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    3.02 carat Round diamond L VS2 Excellent

    $25,760 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.05 carat Oval diamond G I1

    $2,213 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    5.01 carat Round diamond J VVS2 Very good

    $91,322 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    0.7 carat Round diamond G I1 Very good

    $1,058 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    3.51 carat Round diamond G VVS1 Excellent

    $79,448 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

    3.04 carat Round diamond I VVS2 Excellent

    $43,824 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    0.7 carat Round diamond H VVS1 Excellent

    $2,875 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.01 carat Cushion diamond F SI1

    $3,478 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    2.04 carat Round diamond I VVS2 Very good

    $15,332 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

    2.01 carat Round diamond G VS2 Excellent

    $19,354 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    2.09 carat Round diamond F I1 Very good

    $8,810 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.5 carat Round diamond G VS1 Very good

    $10,735 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    0.72 carat Princess diamond F VS2

    $1,585 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

    2 carat Oval diamond H SI2

    $12,382 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.01 carat Cushion diamond D SI1

    $3,887 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1 carat Cushion diamond H VS2

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

    1.05 carat Radiant diamond E I1

    $1,654 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.17 carat Radiant diamond L SI2

    $1,642 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    0.77 carat Cushion diamond K VS2

    $1,156 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.02 carat Princess diamond H SI1

    $3,584 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    0.9 carat Princess diamond F I1

    $1,412 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    0.8 carat Pear diamond K SI2

    $938 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.5 carat Oval diamond I SI2 Very good

    $5,150 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.5 carat Emerald diamond H VS1

    $11,233 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.01 carat Cushion diamond I VS1

    $3,686 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.5 carat Round diamond H VS2 Very good

    $8,807 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.01 carat Pear diamond I SI2

    $2,944 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    0.77 carat Pear diamond K SI2

    $994 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.29 carat Round diamond M VVS2 Excellent

    $2,969 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.07 carat Round diamond H I1 Very good

    $2,016 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.3 carat Round diamond I VVS2 Excellent

    $5,817 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.71 carat Emerald diamond I SI2

    $9,323 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

    1.01 carat Round diamond G VS1 Excellent

    $5,665 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.2 carat Round diamond E VS1 Excellent

    $8,254 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.01 carat Round diamond H VVS2 Very good

    $5,049 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.17 carat Cushion diamond I VS1

    $2,757 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    2.4 carat Round diamond I SI2 Excellent

    $15,750 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.5 carat Round diamond J SI2 Excellent

    $5,800 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.51 carat Round diamond G VS1 Very good

    $11,262 USD
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