• 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

    1.7 carat Cushion diamond F VS2

    $14,362 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 carat Round diamond F VS1 Excellent

    $8,810 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1 carat Round diamond D SI1 Very good

    $6,682 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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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.5 carat Cushion diamond G SI1

    $6,344 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    0.8 carat Cushion diamond E SI1

    $1,630 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1 carat Round diamond H VS2 Excellent

    $4,222 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1 carat Round diamond G VS2 Excellent

    $5,084 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    2.41 carat Round diamond I VS2 Excellent

    $15,340 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    0.8 carat Emerald diamond E SI1

    $1,684 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.5 carat Round diamond I SI2 Excellent

    $6,168 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    0.63 carat Round diamond I SI2 Excellent

    $932 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.71 carat Princess diamond J SI2

    $5,066 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    0.81 carat Cushion diamond F SI1

    $1,483 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    0.8 carat Cushion diamond D SI2

    $1,387 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    0.96 carat Cushion diamond G VS2

    $2,641 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    0.62 carat Round diamond E SI2 Excellent

    $1,182 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    0.81 carat Cushion diamond D SI2

    $1,108 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    0.8 carat Cushion diamond J VVS1

    $1,465 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    0.56 carat Pear diamond E SI2

    $764 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    0.87 carat Emerald diamond D VS2

    $2,319 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    0.8 carat Cushion diamond F SI2

    $1,242 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    0.63 carat Emerald diamond G VS1

    $989 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    0.8 carat Emerald diamond H VS2

    $1,468 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.79 carat Heart diamond J SI2

    $5,490 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    3.01 carat Round diamond I SI1 Excellent

    $28,946 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    0.8 carat Heart diamond F VS2

    $1,889 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

    2.01 carat Round diamond K VVS2 Excellent

    $10,210 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    0.8 carat Heart diamond D VS2

    $2,055 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    0.8 carat Princess diamond D SI1

    $1,734 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.78 carat Cushion diamond D VS2

    $12,294 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    0.81 carat Emerald diamond D VS1

    $2,144 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1 carat Round diamond H VVS1 Excellent

    $4,795 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    2.51 carat Heart diamond G SI2

    $14,554 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    2 carat Round diamond I SI2 Very good

    $8,931 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    2.56 carat Round diamond H SI1 Excellent

    $17,244 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    2.5 carat Round diamond J VVS2 Excellent

    $16,613 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1 carat Round diamond H VS1 Very good

    $4,422 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    3.07 carat Pear diamond L SI2

    $14,208 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

    1.1 carat Round diamond J SI1 Excellent

    $5,699 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.76 carat Radiant diamond G SI2

    $11,556 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1 carat Round diamond I SI2 Good

    $4,294 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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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.51 carat Oval diamond F SI1

    $10,731 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1 carat Round diamond J VS2 Excellent

    $4,255 USD
    View details
  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.76 carat Cushion diamond E SI1

    $15,871 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.79 carat Cushion diamond H VS2

    $13,945 USD
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