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Bonnot Paris
BI-COLOUR TOURMALINE ENGAGEMENT RINGS
Singular and mesmerising, the bi-colour tourmaline engagement ring captivates with two distinct hues united within a single stone — from soft green to vivid pink, all within one crystal. A true wonder of nature, this rare gem…
Learn more — Bi-Colour Tourmaline Engagement Rings
Singular and mesmerising, the bi-colour tourmaline engagement ring captivates with two distinct hues united within a single stone — from soft green to vivid pink, all within one crystal. A true wonder of nature, this rare gem offers an original, characterful alternative to the traditional diamond, for a commitment as unique as the love it celebrates.
At Bonnot Paris, every bi-colour tourmaline engagement ring is crafted to order, in keeping with the highest standards of fine jewellery. Our stones are sourced directly and rigorously selected, a guarantee of authenticity and quality.
With a hardness of 7 to 7.5 on the Mohs scale, tourmaline is well suited to everyday wear. We recommend a setting designed to protect it — a bezel or halo surround — to preserve its brilliance over time. Solitaire, sparkling halo or vintage-inspired design: your ring takes the shape you have always imagined.
Entrust us with the creation of the jewel that will seal your commitment, as precious as the moment it marks.
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Sophie Vincent
5 months ago
J'ai contacté la bijouterie Bonnot car je souhaitais un saphir Padparadscha, qui est assez rare. Toute la transaction a été faite à distance et s'est très bien passée. Ils sont très professionnels, à l'écoute et très sympathiques. J'ai reçu ma bague et elle correspond tout à fait à ma demande. Merci beaucoup 😋
5/5
Célia Gastel
4 months ago
L'adresse parfaite ! Bastien a été très à l'écoute, très bonne communication et très réactif ! Et leurs pierres sont superbes
5/5
Pn Ph
4 months ago
Excellente expérience avec Bastien pour la conception de notre bague de fiançailles sur mesure. Il a été disponible, les échanges ont été fluides et efficaces. La conception de la bague a été rapide, elle est magnifique et correspond exactement à ce que nous voulions. Nous recommandons fortement Bonnot pour son expertise, mais aussi son sens de l'écoute.
5/5
JFL lancelier
4 months ago
Très professionnels.un service impeccable une belle offre de bijoux de très grande qualité
5/5
Alan Cormand
4 months ago
J’ai récemment commencé une collection de pierres précieuses et je suis vraiment impressionné par la qualité. Les pierres sont magnifiques, bien taillées et correspondent parfaitement à la description. En plus, la livraison a été très rapide. Je recommande sans hésitation !
5/5
Alex
4 months ago
Une très belle maison qui allie savoir-faire et excellence du service. L’expérience client est fluide, rapide et d’une grande transparence. Merci à Bonnot Joaillerie pour cet accompagnement de qualité.
5/5
Christine Petit
4 months ago
Bastien est à la fois très sympathique et très professionnel. J'ai été très bien reçue, le contact et la communication sont faciles. J'ai fait transformer une marguerite en bague plus moderne et je suis ravie du résultat.
5/5
marielle frances
4 months ago
Une très belle rencontre autour d'une belle Pierre, merci à Bastien et François pour leur accueil! A très bientôt pour l'achat de nouvelles pierres!
5/5
Yac ine
4 months ago
Professionnels, réactifs et sympathiques, je recommande.
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Our global network allows us to fulfil every request, from classic to the rarest gemstones
At Bonnot Paris, every stone is selected for its rarity, clarity and ethical provenance, ensuring full traceability, exceptional quality and fair pricing.
FAQ — BI-COLOUR TOURMALINE ENGAGEMENT RINGS
A bi-colour tourmaline is a stone that displays two distinct colours — sometimes more — within a single crystal, such as pink and green, or green and colourless. This phenomenon results from variations in the crystal's composition during its formation. Every stone is therefore entirely unique.
Watermelon tourmaline is the most celebrated bi-colour variety: it features a pink centre surrounded by a ring of green, evoking a slice of watermelon. Cut as a slice to reveal this contrast, it is particularly sought after for its striking, wholly natural effect.
Its unique character and dual colouring make it a stone full of personality — one that can never be exactly replicated. It is a bold and original alternative to diamond, ideal for those who want a truly singular jewel that reflects their own story.
With a hardness of 7 to 7.5 on the Mohs scale, bi-colour tourmaline is a resilient stone well suited to regular wear. It is, however, softer than sapphire or diamond: we recommend a protective setting (bezel or halo surround) and a little everyday care to keep its brilliance lasting for years to come.
It depends on the stone. Some bi-colour tourmalines retain a completely natural colour, while others are gently heated to enhance their hues. In every case, we disclose any treatment applied, as a matter of full transparency.
Open-faceted cuts (emerald, cushion) and polished slices are particularly effective at revealing the contrast between the two colours. The choice of cut is decisive: we select each stone carefully and orient the setting to bring out its bi-colour character to the full.
The main deposits are found in Brazil (notably for watermelon tourmalines), Mozambique, Nigeria, Madagascar and Afghanistan. Every stone we offer is carefully selected for its colours, clarity and brilliance.
