Close-up of a person's hand with rings on the fingers, extended forward, with a blurred background.

Our Expertise

“What are we really selling when we sell a diamond? Light… light that has been captured, refracted, and released again. The principles that define this beauty are universal, and they guide everything we do.” — Ronnie Morgenstein

  • A pile of small, shiny, clear diamonds on a dark blue surface.

    Steady Assortments of Natural Round Diamonds

    Precisely calibrated assortments of natural round diamonds, from melee to larger sizes, selected for consistency, balance, and brilliance across a wide range of colors and clarities.

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  • A jeweler uses tweezers to carefully place small pink gemstones on a white surface, with a piece of paper and other tools nearby.

    Precious & Semi-Precious Gemstones

    Refined, calibrated rubies, sapphires, emeralds, and semi-precious gemstones, selected for color harmony, precision cutting, and consistency, immediately available for fine jewelry production.

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  • Person picking up diamond earrings from small black jewelry boxes on a dark surface.

    Perfectly Matched Pairs & Side Stones

    An extensive selection of perfectly matched fancy pairs and side stones, crafted side by side to ensure symmetry, proportion, and light harmony. Available from stock or made to measure.

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  • A dentist using tweezers to place a dental crown or jewelry on a patient's tooth, with a blue dental bib and paper underneath.

    Single Natural Round & Fancy Shaped Diamonds

    A curated selection of natural round and fancy shaped diamonds across a broad range of sizes, colors, and clarities. Stones not in stock can be sourced quickly and transparently through our global network.

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  • Close-up of a jewelry box with a silver ring featuring a large green gemstone, near other jewelry items like a bracelet and a pair of earrings, displayed in a dark setting.

    Second-Hand Goods & Purchasing Services

    We discreetly purchase all diamonds, from break-out melees to certified stones, including chipped or broken goods. Trusted by attorneys, accountants, and estate trustees, we provide precise valuation and immediate payment.

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  • A diamond is being cut with a specialized machine, focused on the diamond in the center, with metallic parts and a dark background.

    Repairs & Professional Services

    Access to expert recutting, repolishing, matching, and repair services through our trusted network of master cutters, available exclusively to I. Morgenstein clients.

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I. Morgenstein offers a comprehensive range of diamond and colored stone services, including precisely calibrated assortments of natural round diamonds, perfectly matched fancy pairs and side stones, single natural diamonds in all shapes and qualities, and a refined selection of precious and semi-precious gemstones. 

In addition to our core inventory, we provide discreet purchasing of second-hand goods with immediate valuation and payment, as well as access to expert recutting, repolishing, and repair services through our trusted network of master cutters.

Contact Us

To learn more about I. Morgenstein or discuss your requirements please get in touch.

CONTACT US