The blue of a sapphire is universally associated with nobility of feeling and the strength of commitment.
It embodies trust, fidelity and serenity — values that make it the ideal stone to symbolise a promise of a shared life.

But beyond its symbolism, the blue sapphire captivates with its singular brilliance.
Its colour — at once deep and luminous — has no equal among other precious stones.
It is a stone of character, lending every ring a bold, instantly recognisable style.

The blue sapphire offers an exceptional range of hues, from the palest pastel to the most intense blue.
Each colour tells its own story — an emotion, a temperament, a style.

• Pastel Blue: delicate and luminous, for a ring of gentle softness.
• Ceylon Blue: vivid and slightly light, emblematic of Sri Lanka.
• Cornflower Blue: velvety and refined, with understated elegance.
• Royal Blue: deep and intense, the hallmark of fine jewellery tradition.
• Peacock Blue: subtle green overtones, for a more singular creation.
• Kashmir Blue: a mythical hue, rare and sought-after, with an incomparable velvety quality.

Hue directly influences the value of a sapphire: the most saturated, luminous and balanced tones are the most coveted.

The teal sapphire is a wonderful alternative to the traditional blue sapphire. Its blue-green hue — at once subtle and distinctive — makes it a truly unique stone.

The padparadscha sapphire is one of the rarest and most coveted of all. Its delicate hue — blending pink and orange — evokes the colour of a sunset or a lotus blossom, from which it takes its name. A stone of exception, it appeals to those in search of originality and refinement.

The finest blue sapphires come from some of the world's most celebrated sources:

• Sri Lanka (Ceylon): light to medium blues of exceptional luminosity.
• Madagascar: a wide diversity of tones, from pastel blue to Peacock blue.
• Burma (Mogok): dense blues with rich saturation.
• Kashmir: a historic deposit now exhausted, whose stones rank among the rarest in the world.

Each origin gives the stone its own chromatic identity.
Choosing a blue sapphire means choosing a story and a provenance.

Bonnot Paris has long made blue sapphire its speciality.
Through our selection office in Beruwala, Sri Lanka, we are the only fine jewellery house in the world with direct access to stones as soon as they are cut, before they reach the open market.

This privileged position allows us to choose the finest blue sapphires available, according to exacting criteria:

• Eye-clean stones, free from inclusions visible to the naked eye.
• No colour zoning.
• No or minimal windowing, ensuring even light diffusion throughout the stone.
• Balanced tones, neither too dark nor too light.

This level of rigour makes every blue sapphire engagement ring a unique piece — both rare and perfectly proportioned.

The majority of blue sapphires on the market are heat-treated, a traditional process that enhances a stone's colour and clarity.
However, unheated sapphires — left in their natural state — are far rarer and more sought-after.

The difference in value can be very significant:

• A heated Royal Blue sapphire of around 1.5 carats typically ranges between €2,500 and €3,500.
• The same stone in an unheated version can be worth more than three times as much, depending on colour and clarity.

Beyond 2 carats, rarity increases exponentially, and prices follow a similar trajectory.

Creating a blue sapphire engagement ring with Bonnot Paris means benefiting from a fully bespoke service and direct stone selection at source.

An exceptional process

1. Sapphire selection: choice of colour, origin and carat weight according to your preferences.
2. Design: sketches, 3D rendering, choice of accompanying diamonds.
3. Artisanal craftsmanship: made in 18-carat gold or platinum, in keeping with the standards of high jewellery.

Our creations can be classic (solitaires, halos, three-stone settings) or original, combining different sapphire hues or subtle colour accents.
Every ring is designed to reflect the personality of the person who wears it.

Blue sapphire pairs beautifully with every precious metal:

• White gold and platinum to highlight the purity and coolness of the blue.
• Yellow gold for a warm, timeless contrast.
• Rose gold for a contemporary and gentle touch.

Each pairing creates a different balance between light and colour, brilliance and depth.

The price of a blue sapphire engagement ring depends primarily on:

• the size of the stone,
• its hue,
• its origin,
• and its condition (heated or unheated).

As a guide:

• Heated pastel blue sapphire (approx. 1.5 ct): from around €4,500.
• Heated Royal Blue sapphire: around €7,000.
• Unheated Royal Blue sapphire: between €10,000 and €12,000.

The larger the stone and the more saturated its colour, the more rapidly the price increases.
The setting (gold or platinum) and accompanying diamonds influence the final price to a lesser degree.

With a hardness of 9 on the Mohs scale, the blue sapphire is perfectly suited to everyday wear.
A simple clean with warm water and mild soap is all that is needed to preserve its brilliance.
An occasional ultrasonic bath with a jeweller will restore its full sparkle.

Bonnot Paris places the expertise of its stone specialists at your service to guide you through the creation of a blue sapphire engagement ring that is truly your own.
Every stone is selected by hand, directly in Sri Lanka, to guarantee quality, traceability and absolute beauty.

Book an appointment to create your unique piece.