• 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

    1.03 carat Round diamond H SI1 Excellent

    $7,838 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    2.1 carat Round diamond D I1 Very good

    $19,410 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    3.01 carat Radiant diamond J VS2

    $18,759 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.05 carat Round diamond I SI1 Excellent

    $3,711 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    3.55 carat Radiant diamond Green VS2

    $22,288 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    4.51 carat Round diamond J SI2 Excellent

    $29,422 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    5.01 carat Cushion diamond H SI2

    $52,763 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.5 carat Round diamond H SI2 Very good

    $5,050 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.51 carat Round diamond G SI2 Excellent

    $6,494 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.85 carat Round diamond I SI2 Excellent

    $6,411 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    3.79 carat Round diamond L SI1 Excellent

    $25,023 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    2.06 carat Round diamond J VVS1 Excellent

    $13,229 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    2.5 carat Round diamond M SI2 Excellent

    $10,369 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    2 carat Round diamond K VS2 Excellent

    $6,606 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    2.51 carat Round diamond H VVS2 Very good

    $24,980 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    2.2 carat Round diamond H VS1 Excellent

    $17,954 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.2 carat Round diamond H SI2 Excellent

    $3,137 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    2.51 carat Round diamond I VS1 Excellent

    $19,603 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    2 carat Oval diamond L SI2

    $6,515 USD
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  • 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

    1.07 carat Round diamond G SI2 Excellent

    $3,650 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    2.01 carat Round diamond H VVS1 Excellent

    $18,432 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1 carat Round diamond G SI1 Excellent

    $3,862 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    2.03 carat Cushion diamond H VS1

    $21,807 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    3.2 carat Oval diamond K SI1

    $21,744 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    2.03 carat Round diamond J VVS2 Excellent

    $16,018 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.09 carat Round diamond H VS2 Excellent

    $6,596 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1 carat Round diamond H SI2 Excellent

    $4,922 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.7 carat Cushion diamond E SI1

    $14,118 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    2 carat Round diamond I SI2 Excellent

    $18,621 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    0.99 carat Heart diamond F SI1

    $4,068 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    2.01 carat Round diamond D SI2 Excellent

    $17,686 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1 carat Round diamond E VS1 Very good

    $8,888 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.58 carat Round diamond H VS2 Excellent

    $14,840 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.71 carat Heart diamond F SI2

    $11,693 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.5 carat Round diamond I VS1 Very good

    $14,426 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    2.49 carat Cushion diamond G SI1

    $20,612 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.7 carat Princess diamond I SI2

    $9,844 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.05 carat Round diamond I VS1 Very good

    $6,387 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.7 carat Round diamond H VVS1 Excellent

    $18,321 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    2.01 carat Round diamond H VVS2 Excellent

    $34,426 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    2.52 carat Round diamond J SI1 Very good

    $20,065 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.01 carat Round diamond I VVS2 Very good

    $6,680 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.7 carat Cushion diamond I SI2

    $9,537 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1 carat Round diamond K VS2 Excellent

    $2,056 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.02 carat Round diamond E SI1 Very good

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

    3 carat Oval diamond L SI2

    $18,415 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.7 carat Princess diamond J SI2

    $8,784 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    2.7 carat Round diamond G VS2 Excellent

    $38,648 USD
    View details
  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.07 carat Round diamond J SI1 Excellent

    $5,010 USD
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