Your expert in sapphires and coloured gemstones for bespoke jewellery

The emerald stands among the four great precious stones, alongside sapphire, ruby and diamond. Its intense green colour, owed to chromium and vanadium, makes it one of the most coveted gemstones in the world. At Bonnot Paris , we select our emeralds directly from the world's finest sources — Colombia, Zambia and Afghanistan (Panjshir Valley) — through our Jaipur office. Every stone is accompanied by an independent laboratory certificate attesting to its origin and characteristics. A symbol of renewal and enduring love, the emerald suits an everyday jewel as beautifully as it does a singular engagement ring . We work with you to bring a 100% bespoke creation to life, from the choice of stone through to the final details. Explore our selection of certified emeralds or book an appointment to discuss a bespoke project. Everything you need to know: The Complete Emerald Guide

Garnet is not a single stone but a broad family of precious gems, spanning a surprisingly rich colour palette: from the deep red most people know to the vivid green of the tsavorite and demantoid, and the fiery orange of the spessartite. With a hardness of 7 to 7.5 on the Mohs scale, garnet is well suited to everyday wear. At Bonnot Paris , every garnet is chosen for its colour, clarity and brilliance, and comes with an independent laboratory certificate. Most are untreated , making them stones of exceptional authenticity. Long worn as a talisman of strength and vitality, garnet captivates today for its character and originality — a striking alternative for an engagement ring that stands apart from the ordinary. Our jewellers will work with you to create a 100% bespoke piece, from selecting the stone through to the final details. Explore our selection of certified garnets or book an appointment to discuss a bespoke project.

The ruby is among the most prestigious gemstones in the world. It belongs to the corundum family and reaches a hardness of 9 on the Mohs scale . Chrome gives it its intense red colour. The higher the concentration, the deeper the tone tends toward blood red. At Bonnot Paris , we source our stones directly from Burma (Mogok) and Mozambique. An independent certificate accompanies every stone, attesting to its origin, treatment and characteristics. The ruby embodies passion and absolute commitment. Its hardness makes it perfectly suited to everyday wear. Its rarity also makes it a sound long-term investment. Explore our catalogue or book an appointment for a personalised selection. Everything you need to know about rubies: The Ruby Guide

Sapphire ranks among the most prestigious precious stones in the world. It reaches 9 on the Mohs hardness scale. Its colour palette is virtually limitless: blue, pink, teal, padparadscha, yellow, violet, green and peach. At Bonnot Paris , we are a stone dealer and the only French member of the International Colored Gemstone Association (ICA). We source our sapphires directly through our office in Sri Lanka . An independent certificate accompanies every stone, attesting to its origin, treatment and characteristics. Its exceptional hardness makes it perfectly suited to everyday wear. Its age-old symbolism evokes fidelity, wisdom and serenity. Sapphire remains the stone of choice for a coloured engagement ring . Explore our collection or book an appointment for a personalised selection. Read our articles to learn everything about sapphire: Diamond or sapphire?

Spinel is one of the most fascinating precious stones on the market today. Long mistaken for ruby — the famous "Black Prince" of the British Crown is in fact a spinel — it has gained growing recognition in fine jewellery over the past fifteen years. With a hardness of 8 on the Mohs scale , it is perfectly suited to everyday wear. From vibrant red to the intense pink of Mahenge , through purples, greys and blues , spinel captivates with its colour and brilliance. Its great strength: it is almost always natural and untreated , an absolute guarantee of authenticity. At Bonnot Paris , every spinel is sourced directly and accompanied by an independent laboratory certificate attesting to its origin and absence of treatment. It is a noble and singular alternative to ruby for an exceptional engagement ring . Our jewellers will work with you to imagine a 100% bespoke creation, from the choice of stone to the finest details. Explore our selection of certified spinels or book an appointment to discuss a bespoke project.