• 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

    1.02 carat Round diamond H SI1 Excellent

    $6,843 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1 carat Round diamond F VVS2 Very good

    $6,864 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1 carat Round diamond F VVS2 Very good

    $6,864 USD
    View details
  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.5 carat Princess diamond J VS2

    $6,887 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.53 carat Round diamond J SI2 Good

    $6,922 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1 carat Round diamond E VVS2 Very good

    $6,965 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.51 carat Oval diamond G SI2 Very good

    $6,977 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.5 carat Round diamond J SI2 Excellent

    $6,994 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    2.52 carat Cushion diamond Yellow VS2

    $7,015 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1 carat Round diamond F SI1 Excellent

    $7,034 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.5 carat Round diamond I SI1 Very good

    $7,051 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.51 carat Oval diamond J SI1

    $7,071 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.50 carat Round diamond I SI2 Excellent

    $7,092 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

    1.5 carat Round diamond I SI2 Very good

    $7,124 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.2 carat Round diamond G SI1 Excellent

    $7,194 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.13 carat Round diamond H VS2 Excellent

    $7,206 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

    1.11 carat Round diamond F VS1 Excellent

    $7,244 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.5 carat Pear diamond I SI2

    $7,266 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

    2.19 carat Pear diamond Yellow SI1

    $7,313 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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  • 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

    1.51 carat Oval diamond J VS2

    $7,405 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.12 carat Round diamond E VS1 Excellent

    $7,410 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.63 carat Round diamond F SI2 Excellent

    $7,418 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.5 carat Radiant diamond F SI2

    $7,426 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

    1.2 carat Round diamond G VVS2 Excellent

    $7,448 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.5 carat Cushion diamond Yellow SI2

    $7,511 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.7 carat Heart diamond G SI2

    $7,522 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.2 carat Round diamond F VS1 Excellent

    $7,527 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.5 carat Round diamond K SI2 Very good

    $7,611 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

    1.5 carat Pear diamond F SI2

    $7,636 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.01 carat Round diamond D VVS2 Very good

    $7,638 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.7 carat Round diamond J SI1 Excellent

    $7,658 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.01 carat Round diamond H VS1 Very good

    $7,661 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

    1.5 carat Oval diamond H SI2

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

    1 carat Round diamond G SI1 Excellent

    $7,723 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

    1.03 carat Round diamond H SI1 Excellent

    $7,838 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
    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

    1.52 carat Emerald diamond I VS1

    $7,905 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.25 carat Round diamond G VVS2 Excellent

    $7,912 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.2 carat Round diamond G VS1 Excellent

    $7,913 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.2 carat Round diamond I VS2 Excellent

    $8,026 USD
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