• 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

    1.13 carat Round diamond H VS2 Excellent

    $4,957 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.14 carat Radiant diamond H VS2

    $3,621 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    2.2 carat Round diamond I IF Excellent

    $19,232 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.2 carat Round diamond I SI2 Excellent

    $8,878 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.12 carat Round diamond I SI2 Excellent

    $3,752 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.19 carat Round diamond K SI1 Excellent

    $4,165 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.53 carat Round diamond K VS1 Excellent

    $7,631 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.53 carat Round diamond M VS2 Excellent

    $5,326 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.5 carat Pear diamond H SI2

    $8,039 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.5 carat Round diamond K VVS2 Excellent

    $7,843 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1 carat Round diamond E VS1 Very good

    $7,693 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1 carat Round diamond F VS2 Very good

    $5,340 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    2.01 carat Round diamond G VS2 Excellent

    $24,469 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1 carat Round diamond G SI2 Very good

    $3,642 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.8 carat Round diamond L VVS1 Very good

    $9,671 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.02 carat Princess diamond H SI2

    $2,375 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.5 carat Princess diamond H VS1

    $11,425 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    4.02 carat Radiant diamond L SI2

    $18,880 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.5 carat Round diamond G IF Excellent

    $16,587 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    2.35 carat Round diamond J VS2 Excellent

    $20,455 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    2 carat Round diamond I VS1 Excellent

    $15,025 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.13 carat Radiant diamond L SI1

    $1,793 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    2.01 carat Round diamond E VS2 Excellent

    $24,768 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.01 carat Radiant diamond E SI2

    $2,473 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.5 carat Round diamond J SI2 Excellent

    $7,098 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.2 carat Round diamond L SI1 Very good

    $3,438 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.5 carat Round diamond K VVS2 Excellent

    $8,361 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.61 carat Cushion diamond G SI1

    $8,715 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    0.9 carat Princess diamond H VS1

    $2,524 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.25 carat Round diamond J SI2 Excellent

    $4,206 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.51 carat Round diamond L VVS2 Very good

    $7,242 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1 carat Round diamond G VS2 Very good

    $5,556 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.5 carat Round diamond K VS2 Very good

    $6,201 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    2 carat Round diamond J VS1 Excellent

    $13,926 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    2 carat Round diamond I VS1 Excellent

    $20,517 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1 carat Round diamond D I1 Very good

    $2,510 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.81 carat Round diamond K VVS2 Very good

    $10,543 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.5 carat Round diamond G VVS1 Very good

    $18,219 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1 carat Round diamond H VVS2 Very good

    $6,226 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.51 carat Princess diamond H VS1

    $12,469 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    0.9 carat Princess diamond G SI2 Good

    $1,706 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.2 carat Round diamond H VS2 Excellent

    $7,436 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.51 carat Princess diamond E VS2

    $11,389 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.5 carat Round diamond H VVS2 Excellent

    $10,281 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.5 carat Pear diamond D SI2

    $10,281 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.01 carat Princess diamond K VS1

    $2,730 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.58 carat Round diamond E VVS2 Excellent

    $24,988 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.51 carat Cushion diamond J VS1

    $6,753 USD
    View details
  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.01 carat Round diamond K VS2 Excellent

    $3,455 USD
    View details
  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    3.01 carat Heart diamond M SI2

    $8,860 USD
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