• 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

    1.5 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
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  • 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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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.22 carat Round diamond I VS1 Excellent

    $10,767 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    3.01 carat Round diamond G SI2 Excellent

    $46,866 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    2.01 carat Round diamond H VVS2 Very good

    $28,404 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.01 carat Round diamond H VS2 Excellent

    $9,299 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.09 carat Round diamond I SI2 Excellent

    $4,818 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.2 carat Round diamond F SI2 Very good

    $6,717 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 carat Round diamond F SI1 Excellent

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

    1.2 carat Round diamond I VS2 Excellent

    $9,489 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.51 carat Round diamond G SI2 Very good

    $11,287 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.7 carat Round diamond H VS2 Excellent

    $21,497 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    2.01 carat Marquise diamond J SI2

    $12,074 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.07 carat Round diamond I SI1 Excellent

    $4,040 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.13 carat Princess diamond E I1

    $5,103 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.01 carat Emerald diamond F SI1

    $6,535 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    0.9 carat Round diamond G VVS2 Excellent

    $8,209 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    0.37 carat Round diamond D SI1 Excellent

    $1,053 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.52 carat Round diamond H SI2 Excellent

    $7,573 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

    1.5 carat Round diamond H SI2 Very good

    $8,623 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.13 carat Oval diamond K VS2

    $2,676 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.51 carat Princess diamond I VVS1

    $10,125 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    2.04 carat Pear diamond E VVS2

    $30,149 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.61 carat Princess diamond I VVS1

    $10,236 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.17 carat Heart diamond H SI2

    $2,673 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1 carat Round diamond G VVS2 Very good

    $6,758 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1 carat Round diamond G VVS2 Very good

    $6,758 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.06 carat Round diamond M SI2 Excellent

    $1,852 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    0.92 carat Round diamond I SI2 Excellent

    $1,588 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

    2.06 carat Round diamond F SI2 Excellent

    $16,494 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    0.35 carat Round diamond K IF Very good

    $408 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.02 carat Round diamond F I1 Very good

    $2,653 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

    1.2 carat Round diamond H VS1 Excellent

    $6,766 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.27 carat Radiant diamond J SI2

    $3,123 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    1.01 carat Emerald diamond G VVS1

    $3,750 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    0.9 carat Round diamond I SI1 Excellent

    $2,678 USD
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  • Sell by Guy
    Diamantaire since 1966, Bourse of New York

    2.07 carat Round diamond K VVS2 Excellent

    $13,064 USD
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