One-of-a-Kind Engagement Rings

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Engagement rings made with materials so rare and unusual, we only made one. With one-of-a-kinds, enjoy a complimentary resizing whenever — this means that you can have the ring now and send it back to us at any point in the future to resize for the perfect fit. Just select a size 6; we'll ship now and resize later.

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  • Closeup details of the custom jewelry displays within the Mociun Williamsburg Brooklyn Showroom interior, featuring autumnal colors, warm walnut finishes and furnishings from Bower Studios. Closeup details of the custom jewelry displays within the Mociun Williamsburg Brooklyn Showroom interior, featuring autumnal colors, warm walnut finishes and furnishings from Bower Studios.

    Get a closer look at what's meant to be yours.

    BOOK A ONE-ON-ONE

    Get a closer look at what's meant to be yours.

    BOOK A ONE-ON-ONE

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    Spectral Ring on model. Spectral Ring on model.
    Spectral Ring on light color background.

    Spectral Ring

    Spectral Ring

    $30,311.00
    $30,311.00 $30,311.00

    NEW ARRIVAL

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    Moonflower Ring on model. Moonflower Ring on model.
    Moonflower Ring on light color background.

    Moonflower Ring

    Moonflower Ring

    $19,486.00
    $19,486.00 $19,486.00

    NEW ARRIVAL

  • product_details::Cushion Diamond Gusher Ring on model.
    Cushion Diamond Gusher Ring on light color background.

    Gusher Ring - Cushion Diamond

    Cushion Diamond Gusher Ring

    $23,094.00
    $23,094.00 $23,094.00

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    Gusher Diamond Ring 046 on model. product_details::Gusher Diamond Ring 046 on model.
    Gusher Diamond Ring 046 on light color background.

    Gusher Ring - Grand Pear Diamond

    Grand Pear Diamond Gusher Ring

    $38,249.00
    $38,249.00 $38,249.00

  • Styled long exposure image featuring the the Ula Pearl Necklaces on dark color background. Styled long exposure image featuring the the Ula Pearl Necklaces on dark color background.

    Instant gratification, endless possibility.

    A GIFT CARD IS BOTH

    Instant gratification, endless possibility.

    A GIFT CARD IS BOTH

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    Gusher Diamond Ring 048 on model. product_details::Gusher Diamond Ring 048 on model.
    Gusher Diamond Ring 048 on light color background.

    Gusher Ring - Cushion Diamond

    Cushion Diamond Gusher Ring

    $34,641.00
    $34,641.00 $34,641.00

  • Styled long exposure image featuring the the Ula Pearl Necklaces on dark color background. Styled long exposure image featuring the the Ula Pearl Necklaces on dark color background.

    Instant gratification, endless possibility.

    A GIFT CARD IS BOTH

    Instant gratification, endless possibility.

    A GIFT CARD IS BOTH

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    Geyser Diamond Ring 006 on model. Geyser Diamond Ring 006 on model.
    Geyser Diamond Ring 006 on light color background.

    Geyser Diamond Ring 006

    Geyser Diamond Ring 006

    $53,404.00
    $53,404.00 $53,404.00

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    Gusher Diamond Ring 029 on model. product_details::Gusher Diamond Ring 029 on model.
    Gusher Diamond Ring 029 on light color background.

    Gusher Ring - Platinum-set Cushion Diamond

    Platinum-set Cushion Diamond Gusher Ring

    $39,692.00
    $39,692.00 $39,692.00

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    Supernova Ring on model. product_details::Supernova Ring on model.
    Supernova Ring on light color background.

    Supernova Ring

    Supernova Ring

    $80,106.00
    $80,106.00 $80,106.00

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    Miroir Ring on male model. Miroir Ring on model.
    Miroir Ring on light color background.

    Miroir Ring

    Miroir Ring

    $16,238.00
    $16,238.00 $16,238.00

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    Doppiare Ring on model. product_details::Doppiare Ring on model.
    Doppiare Ring on light color background.

    Doppiare Ring

    Doppiare Ring

    $30,671.00
    $30,671.00 $30,671.00

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    Compassion Ring on model. Compassion Ring on male model.
    Compassion Ring on light color background.

    Compassion Ring

    Compassion Ring

    $18,475.00
    $18,475.00 $18,475.00

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    Repeat Ring on model. product_details::Repeat Ring on model.
    Repeat Ring on light color background.

    Repeat Ring

    Repeat Ring

    $17,321.00
    $17,321.00 $17,321.00

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    Match Ring on model. product_details::Match Ring on model.
    Match Ring on light color background.

    Match Ring

    Match Ring

    $41,857.00
    $41,857.00 $41,857.00

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    Laelia Ring on model. product_details::Laelia Ring on model.
    Laelia Ring on light color background.

    Laelia Ring

    Laelia Ring

    $108,251.00
    $108,251.00 $108,251.00

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    Narcissus Ring on model. Narcissus Ring on model.
    Narcissus Ring on light color background.

    Narcissus Ring

    Narcissus Ring

    $252,585.00
    $252,585.00 $252,585.00

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    Gusher Diamond Ring 046, Gold Wide Level Band and Gold Pavé Thin Level Band stack on model. Gusher Diamond Ring 041 on model.
    Gusher Diamond Ring 041 on light color background.

    Gusher Ring - Pear Diamond

    Pear Diamond Gusher Ring

    $41,857.00
    $41,857.00 $41,857.00