Assorted loose diamonds in various cuts and sizes, showcasing brilliance and sparkle on white background

FIND THE PERFECT DIAMOND

GET YOUR PERSONALIZED RECOMMENDATION BY EMAIL

TAKE THE QUIZ

DESIGN YOUR BESPOKE JEWELRY

Natural diamonds

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Lab grown diamonds

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NATURAL MELEES

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Explore the world of diamonds

Assorted diamond cuts including round, heart, oval, and emerald held by tweezers on white background

THE 4Cs:


Carat, Color, Clarity, Cut

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Close-up of a radiant cut diamond under magnifier, showcasing clarity and brilliance for jewelry selection.

Investing in diamonds

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Luxury necklace with radiant yellow diamond centerpiece and pavé white diamonds on black velvet

Latest market news

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Round brilliant cut diamond held by tweezers, showcasing sparkle and clarity against black background

Natural vs lab-grown:

The differences

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OUR COMMITMENTS

  • Natural rough diamond with geometric facets on white background, showcasing clarity and raw beauty

    Traceability and origin

    We ensure strict traceability for all our natural diamonds, with their conflict-free origins verified in full compliance with the Kimberley Process. Additionally, we exclusively collaborate with partners certified by the Responsible Jewellery Council (RJC), who are committed to ethical and responsible practices.

  • GIA graded diamond in display case with loose diamonds, showcasing certified natural gemstones for jewelry.

    INTERNATIONAL LABORATORY CERTIFICATE

    Each diamond is engraved and accompanied by a paper certificate issued by a world-renowned laboratory such as GIA, IGI or HRD. This official document certifies the stone’s authenticity and provides an accurate assessment of the 4Cs, ensuring complete transparency regarding the quality of your diamond.

  • Brilliant cut diamond with rainbow light reflections, showcasing natural sparkle and precision facets

    Diamstar NFT digital certificate

    We're innovating by also offering you a unique and exclusive digital Diamstar certificate, issued as a secure NFT on the blockchain. This tamper-proof certificate guarantees the authenticity of your diamond and allows you to own it in an innovative and lasting form.

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  • Heavy-duty bank vault door with secure locking mechanism, symbolizing safe storage for valuable diamonds and jewelry.

    Free and secure delivery

    We offer complimentary shipping on all international orders. Every shipment is insured and securely handled, with the mode of transport carefully selected based your destination and the value of your purchase. We partner with FedEx and specialized carriers to ensure your order arrives safely and with complete peace of mind.

Sparkling natural and lab-grown diamonds in various cuts on white background

EXPERTISE, EXCELLENCE, SUSTAINABILITY

Rooted in a deep passion for diamonds, DIAMSTAR embodies a contemporary and committed vision of this extraordinary gem. With a forward-looking approach, it places innovation, sustainability, and responsibility at the heart of its mission.

On request, we also offer access to an exclusive range of gems — including a wide selection of fancy cuts and colors, exceptional natural diamonds over 2 carats, as well as custom-made pairings.

Let us know what you’re looking for via the form below, or contact us directly for tailored support.

Get my custom selection CONTACT

  • Free delivery

    France, EU, international

  • Dual certification

    Laboratory and blockchain

  • Secure transportation

    Guarantees and insurance

  • Human support

    Expertise and assistance 7/7