• 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 Round diamond G SI1 Very good

    $3,825 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.01 carat Radiant diamond H VS2

    $3,075 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    2.01 carat Round diamond H VVS1 Excellent

    $24,700 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1 carat Round diamond G SI1 Excellent

    $4,010 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    2.02 carat Princess diamond G VS1

    $16,560 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.5 carat Radiant diamond H SI2

    $6,533 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    3.01 carat Oval diamond G SI2

    $32,481 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.7 carat Princess diamond H SI1

    $7,346 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.7 carat Cushion diamond G SI2

    $5,897 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.08 carat Round diamond H VS2 Excellent

    $5,394 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    2.01 carat Oval diamond K SI1

    $8,848 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    2.15 carat Round diamond J VS1 Excellent

    $17,446 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.5 carat Emerald diamond D VVS1

    $12,632 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    2.01 carat Cushion diamond D VS2

    $19,070 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.51 carat Radiant diamond J SI2

    $2,809 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.11 carat Round diamond I SI1 Excellent

    $3,649 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.7 carat Heart diamond G SI2

    $7,522 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.5 carat Cushion diamond H VS2

    $6,385 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    2.1 carat Cushion diamond E SI2

    $13,819 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    2.01 carat Round diamond G SI1 Excellent

    $14,997 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    2.01 carat Round diamond J VS1 Very good

    $12,449 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    4.1 carat Pear diamond J SI2

    $18,756 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1 carat Round diamond H SI2 Excellent

    $2,627 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.7 carat Round diamond J SI1 Excellent

    $7,658 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.7 carat Princess diamond H SI2

    $5,503 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.7 carat Cushion diamond G VVS1

    $13,074 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.7 carat Cushion diamond H SI2

    $9,674 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    4.02 carat Oval diamond K SI2

    $33,125 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.5 carat Round diamond I VS1 Excellent

    $8,175 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.21 carat Round diamond H VS1 Excellent

    $6,821 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.2 carat Round diamond H VS2 Excellent

    $6,399 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.2 carat Round diamond J SI1 Excellent

    $3,707 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.2 carat Round diamond G VS1 Excellent

    $7,913 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.8 carat Cushion diamond G SI2

    $6,527 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    2 carat Round diamond I VS1 Very good

    $14,720 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.7 carat Pear diamond E SI2

    $8,103 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.29 carat Cushion diamond F SI2

    $3,384 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.01 carat Round diamond I SI2 Excellent

    $2,821 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    3.01 carat Oval diamond K SI2

    $16,069 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1 carat Round diamond I SI2 Excellent

    $2,897 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.1 carat Round diamond G SI2 Excellent

    $3,617 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    2 carat Round diamond H SI1 Excellent

    $14,363 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    2.5 carat Round diamond G VS2 Very good

    $25,033 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    3.01 carat Round diamond L VS1 Very good

    $21,140 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.71 carat Round diamond H VS2 Excellent

    $10,475 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    2 carat Oval diamond L SI2

    $5,907 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    2.2 carat Round diamond J SI1 Excellent

    $10,292 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    5.01 carat Oval diamond J SI1

    $46,337 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.6 carat Round diamond J SI2 Excellent

    $5,032 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.5 carat Oval diamond K SI2

    $3,558 USD
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