Bonnot Paris
Blue tourmaline , also known as indicolite , is one of the rarest varieties within the tourmaline family. Its colour ranges from soft, airy blue to deep, saturated blue, with certain stones showing blue-green nuances. This rarity…
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Every stone in this collection can be set in Paris on 18k gold, designed with you.
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5/5
Excellent
5/5
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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At Bonnot Paris, every stone is selected for its rarity, clarity and ethical provenance, ensuring full traceability, exceptional quality and fair pricing.
Blue tourmaline is a variety of tourmaline whose colour ranges from soft blue to deep, rich blue. It is also known as indicolite. Its colour comes from traces of iron in its crystal structure. With a hardness of 7–7.5 on the Mohs scale, it offers good durability. It is one of the rarest varieties of tourmaline in the world.
Indicolite is the official gemological name for blue tourmaline. The term derives from the word "indigo" and covers the full range of blue tourmaline shades. Indicolite spans from bright, luminous light blue to intense deep blue. Some indicolites display green undertones, tending towards blue-green. It is one of the most sought-after tourmaline varieties among collectors.
Both stones can display similar blues, but their chemical composition differs. Sapphire is a corundum (aluminium oxide) with a hardness of 9. Tourmaline is a complex silicate with a hardness of 7–7.5. Sapphire offers greater resistance for intensive daily wear. Blue tourmaline presents a softer, more velvety brilliance. In terms of price, a blue tourmaline typically costs five to ten times less than an equivalent blue sapphire.
The price of a blue tourmaline varies according to colour saturation and carat weight. For a good-quality blue tourmaline of around 1 carat, expect to pay €300 to €800 per carat. For 2–3 carats of equivalent quality, prices range from €800 to €2,000 per carat. Exceptional indicolites with deep, pure blue colour and no inclusions can reach €3,000 to €5,000 per carat. Paraíba tourmalines far exceed these ranges, from €5,000 to €50,000 per carat.
Blue tourmalines come primarily from four historic sources. Brazil (Minas Gerais) has been the benchmark since the eighteenth century. Madagascar has established itself as the world's second major source since the 1990s. Afghanistan (Nuristan) produces exceptional indicolites. Pakistan rounds out the offering with deep, rich blues.
Blue tourmaline is sometimes subject to low-temperature heating to intensify its colour. This treatment is internationally accepted and stable over time. Unheated indicolites command a premium over treated stones of equivalent quality. Bonnot Paris favours natural blue tourmalines. The independent certificate systematically specifies any treatment the stone may have undergone.
Yes, blue tourmaline is suitable for an engagement ring, with a few considerations. Its hardness of 7–7.5 makes it less resistant than blue sapphire (9). A protective setting is recommended for intensive daily wear. It offers an original and more accessible alternative to the classic blue sapphire. Its unique colour makes it a bold and refined choice.
Paraíba tourmaline is a variety of blue tourmaline coloured by copper. Its neon blue-green colour — often described as "electric blue" — sets it radically apart from classic indicolites. Discovered in Brazil in the 1980s, it ranks among the most expensive gemstones in the world. Its price regularly exceeds €20,000 per carat for the finest qualities. Indicolite (classic blue tourmaline) offers softer, more understated blues at a far more accessible price.
