Yes, absolutely. At Bonnot Paris, you can select the stone of your choice and design a bespoke piece around it.

Our experts will guide you in imagining a design that showcases the gemstone to its fullest, while reflecting your personal style and personality.

Our designers will then produce several sketches so you can visualise the piece.

Once the stones and design have been approved, your creation is crafted by hand in our workshops by our master jewellers, to the highest standards of excellence of Maison Bonnot Paris.

Yes, all our stones are certified by renowned laboratories such as Bellerophon, ICA GemLab, London Gem Lab, and others, guaranteeing their authenticity and exceptional quality.

Delivery is made either in person in Paris or via a specialist carrier, ensuring a secure, insured and fully reliable shipment to its destination.

Blue sapphires display a rich range of hues, each with its own character and its own place in the market.

The Cornflower shade is one of the most sought-after today, offering a deep blue tone that is neither too light nor too dark, capturing the very essence of a summer sky.

Royal Blue remains a timeless classic, with a deep tone reminiscent of navy blue, evoking elegance and nobility.

Ceylon Blue, characteristic of Sri Lankan sapphires, is equally prized for its luminosity and softness, recalling the clarity of tropical waters.

Finally, Kashmir Blue, the hallmark of sapphires from that region, is distinguished by a deep, silky blue with a gentle violet touch, like a starlit night.

Each shade has its own characteristics and its own price tier. Kashmir Blue, for example, can reach extraordinary values due to its rarity and high demand. Ceylon Blue is appreciated for its availability and universal appeal.

At Bonnot Paris, we understand the importance of these nuances and are committed to guiding you towards the choice that best suits your project, ensuring impeccable quality and provenance.

Blue sapphires are mined in many countries, each with its own reputation and distinctive character:

• Sri Lanka: the country remains the leading supplier of blue sapphires on the current market, with centuries of mining history. The emblematic shade of these gems is named after it — Ceylon Blue.

• Madagascar: this island has become the second largest source of sapphires, recognised for the high quality of its stones. Supply is, however, sometimes affected by government export moratoria.

• Kashmir: though less known to the general public, this region has yielded some of the most magnificent sapphires in the world. Production is now negligible, which lends these gems an exceptional rarity.

• Australia: sapphires are mined primarily in New South Wales and Queensland.

Blue sapphires are also found in Burma, Thailand and Montana in the United States, each offering unique characteristics that enrich the global market for these remarkable stones.

The value of a blue sapphire varies considerably according to several key criteria: the intensity of its colour, its clarity, its weight, its origin and its rarity.

It is important to note that the price of a sapphire increases exponentially with its weight, as the larger the stone, the rarer it becomes. For example, a good-quality heat-treated blue sapphire of 1 carat will cost approximately €1,000 per carat, while a blue sapphire of 3 carats of equivalent quality will cost approximately €2,000 per carat.

Heat treatment also has a significant bearing on the price of blue sapphires. An untreated stone will cost around 30% more for stones between 1 and 2 carats, and that premium can be multiplied tenfold or more for larger weights.

Today, the most expensive and rarest blue sapphires come from Kashmir. The finest examples trade at several tens of thousands of dollars per carat.

Other highly sought-after and far more accessible blue sapphires come from Sri Lanka and Madagascar, both sources offering very good quality. For a comparable stone, a Sri Lankan blue sapphire will command a higher price than one from Madagascar.