• 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 carat Round diamond I VS2 Very good

    $5,878 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.51 carat Cushion diamond G VS2

    $10,093 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    2 carat Round diamond H VS1 Excellent

    $34,060 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.9 carat Cushion diamond J SI1

    $9,938 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.72 carat Heart diamond H SI2

    $10,744 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    2.03 carat Round diamond H VVS1 Excellent

    $41,463 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    2.01 carat Round diamond I SI2 Very good

    $19,824 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    3.01 carat Round diamond I SI2 Excellent

    $37,926 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.7 carat Oval diamond H SI2

    $9,405 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.01 carat Round diamond I SI2 Excellent

    $4,416 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1 carat Round diamond G SI2 Excellent

    $5,227 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.05 carat Round diamond G VVS2 Excellent

    $9,700 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    2 carat Round diamond I SI1 Excellent

    $14,979 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.71 carat Round diamond H VS1 Excellent

    $18,666 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    2 carat Round diamond G SI1 Good

    $21,687 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.51 carat Round diamond K VS2 Very good

    $7,399 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.87 carat Cushion diamond E SI1

    $12,670 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    2.12 carat Round diamond K VVS1 Excellent

    $16,013 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    2.01 carat Princess diamond J SI1

    $13,327 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    2 carat Round diamond J SI2 Excellent

    $14,445 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.01 carat Round diamond G SI2 Excellent

    $6,071 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.1 carat Round diamond H VS2 Excellent

    $9,582 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.06 carat Round diamond H VVS2 Excellent

    $4,567 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.51 carat Radiant diamond J SI2

    $6,032 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    0.58 carat Round diamond G VS2 Very good

    $1,296 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    2.2 carat Oval diamond K VS2

    $8,896 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    2.04 carat Round diamond H VS1 Very good

    $20,510 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.7 carat Round diamond K VS1 Very good

    $6,574 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.04 carat Radiant diamond I VS1

    $3,242 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1 carat Round diamond H VS2 Excellent

    $4,654 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.08 carat Cushion diamond E SI2

    $2,874 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.5 carat Radiant diamond L SI2

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

    1.01 carat Round diamond G VS2 Excellent

    $4,656 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.51 carat Oval diamond H SI2

    $4,896 USD
    View details
  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    3.01 carat Cushion diamond F VVS1

    $44,428 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.01 carat Round diamond I SI1 Excellent

    $3,450 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.06 carat Radiant diamond G SI1

    $2,844 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    3.81 carat Round diamond D SI2 Excellent

    $58,520 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.02 carat Radiant diamond G VS2

    $4,381 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.01 carat Oval diamond H SI2

    $2,393 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.7 carat Round diamond J VVS2 Excellent

    $8,337 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.71 carat Round diamond J VS1 Excellent

    $8,395 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

    1.01 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
    View details
  • 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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