• 14 days return

  • Free shipping

  • Diamond expert team

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.

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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1 carat Radiant diamond Yellow VS2

    $2,829 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

    1.08 carat Cushion diamond E SI2

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

    0.7 carat Round diamond H VVS1 Excellent

    $2,875 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.20 carat Radiant diamond J SI1

    $2,894 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

    1.00 carat Radiant diamond H SI1

    $2,924 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.01 carat Round diamond I SI2 Excellent

    $2,925 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.1 carat Round diamond H SI2 Very good

    $2,940 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    0.91 carat Princess diamond G VS1

    $2,950 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    0.82 carat Emerald diamond E VVS1

    $2,953 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.29 carat Round diamond M VVS2 Excellent

    $2,969 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.01 carat Cushion diamond G SI2

    $2,977 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.27 carat Radiant diamond J SI2

    $2,987 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    0.96 carat Princess diamond I VVS2

    $3,040 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    0.97 carat Round diamond E SI2 Excellent

    $3,045 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    0.9 carat Round diamond H VS1 Very good

    $3,049 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

    1.01 carat Round diamond H SI2 Very good

    $3,090 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.5 carat Oval diamond G I1

    $3,104 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.62 carat Radiant diamond M VS2

    $3,108 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    0.91 carat Radiant diamond G VS1

    $3,123 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

    0.9 carat Princess diamond G VS1

    $3,234 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

    1.01 carat Radiant diamond D SI1

    $3,266 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    0.71 carat Round diamond D VS2 Very good

    $3,281 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.22 carat Pear diamond H SI2

    $3,290 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.62 carat Cushion diamond L SI1

    $3,294 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    0.95 carat Princess diamond G VS1

    $3,343 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.05 carat Radiant diamond Yellow SI2

    $3,356 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.02 carat Round diamond F SI2 Excellent

    $3,359 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

    1.1 carat Oval diamond Yellow SI2

    $3,407 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1 carat Round diamond H SI2 Excellent

    $3,420 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

    1.01 carat Round diamond I SI1 Excellent

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

    1.01 carat Cushion diamond F SI1

    $3,478 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.20 carat Oval diamond H SI2 Very good

    $3,480 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1 carat Round diamond G SI2 Excellent

    $3,523 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    0.9 carat Round diamond G VS1 Very good

    $3,545 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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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.01 carat Round diamond I SI1 Excellent

    $3,572 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.02 carat Princess diamond H SI1

    $3,584 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

    1.14 carat Radiant diamond H VS2

    $3,621 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

    1.11 carat Round diamond I SI1 Excellent

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

    1.07 carat Round diamond G SI2 Excellent

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

    1.03 carat Cushion diamond H SI2

    $3,658 USD
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