• 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 Radiant diamond G SI1

    $5,206 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    2.5 carat Round diamond F SI2 Very good

    $28,803 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.52 carat Round diamond G VVS1 Excellent

    $21,591 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    4.02 carat Round diamond G VS2 Very good

    $62,918 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    2.5 carat Round diamond H VS1 Very good

    $33,502 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    5.23 carat Princess diamond J SI2

    $64,704 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.01 carat Radiant diamond J VS2

    $4,099 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.12 carat Round diamond H SI1 Excellent

    $8,260 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    2.01 carat Heart diamond E VS2

    $24,745 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    3 carat Oval diamond K SI2

    $22,369 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    3.13 carat Round diamond F SI2 Excellent

    $55,889 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.07 carat Radiant diamond G VS2

    $6,280 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    5 carat Emerald diamond H SI2

    $83,130 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1 carat Round diamond E SI1 Excellent

    $7,831 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.8 carat Cushion diamond F SI1

    $16,702 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.51 carat Round diamond H SI2 Excellent

    $12,318 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.6 carat Cushion diamond D SI1

    $11,410 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.8 carat Heart diamond G VS2

    $15,044 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.51 carat Princess diamond E VS2

    $12,235 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    2.02 carat Round diamond K VVS2 Excellent

    $20,527 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1 carat Round diamond F VS2 Excellent

    $9,406 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    2 carat Oval diamond J SI2

    $13,061 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    3.01 carat Pear diamond I SI2

    $33,852 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.81 carat Heart diamond I SI2

    $10,891 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.71 carat Cushion diamond I SI2

    $8,946 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.29 carat Round diamond I VS2 Excellent

    $9,631 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    2.62 carat Oval diamond L SI1

    $12,105 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    3.93 carat Round diamond I SI2 Excellent

    $53,968 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    3.04 carat Round diamond L SI1 Excellent

    $26,222 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    5.01 carat Round diamond I SI2 Excellent

    $69,762 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    3.01 carat Round diamond I SI2 Excellent

    $34,718 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    3.31 carat Round diamond K SI2 Excellent

    $32,673 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    3.06 carat Pear diamond E SI2

    $36,201 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    3.01 carat Round diamond H SI1 Excellent

    $40,426 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    3.03 carat Round diamond H SI1 Excellent

    $45,153 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1 carat Round diamond G SI1 Excellent

    $6,305 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    2.06 carat Round diamond G SI2 Excellent

    $17,148 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1 carat Round diamond G SI1 Excellent

    $6,305 USD
    View details
  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    2.01 carat Emerald diamond I SI2

    $14,096 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.5 carat Round diamond I SI1 Excellent

    $10,068 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1 carat Round diamond G VS1 Very good

    $8,913 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    2.18 carat Round diamond I VS2 Excellent

    $30,207 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    5.03 carat Pear diamond K SI2

    $60,103 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    3.02 carat Round diamond G VS1 Excellent

    $54,984 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.53 carat Round diamond F I1 Very good

    $3,927 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    2.02 carat Round diamond I SI1 Excellent

    $18,937 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1 carat Round diamond G SI1 Excellent

    $7,290 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.01 carat Round diamond G SI2 Excellent

    $5,033 USD
    View details
  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1 carat Round diamond F SI1 Excellent

    $7,875 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1 carat Round diamond G SI1 Excellent

    $7,723 USD
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