Two-tone sapphire
With their play of colors evoking a world straight out of a dream, two-tone sapphires have something bewitching about them. What's more, no two stones are alike. Blue and orange, blue and yellow, violet and pink... these stunning sapphires will appeal to you if you're looking for a totally unique and original stone.
With their play of colors evoking a world straight out of a dream, two-tone sapphires have something bewitching about them. What's more, no two stones are alike. Blue and orange, blue and yellow, violet and pink... these stunning sapphires will appeal to you if you're looking for a totally unique and original stone.
Discover our sourcing
At Bonnot Paris, our worldwide network enables us to meet all your requests for traditional or rare stones.
Each stone is selected for its rarity, clarity and ethics, guaranteeing traceability, exceptional quality and fair prices.

Our expertise
The expertise of Maison Bonnot Paris is the result of an alchemy between tradition and innovation. Our stones are precision-cut, guaranteeing exceptional brilliance and symmetry.
Each piece is handcrafted in 18-carat gold, demonstrating our commitment to quality.
From the casting process to the final polish, each creation is the result of the meticulous work of four specialized craftsmen.
This collaborative process ensures that each piece of jewelry is a work of art in its own right.
Finally, we are committed to completing each piece within four weeks, combining speed and excellence.
Our know-how is the indelible signature of the quality and authenticity we offer our customers.
A bicolor sapphire is a stone that naturally displays two colors. It can come from any sapphire-mining region in the world, such as Madagascar or Sri Lanka, but is relatively rare. There are also sapphires considered bicolored that include translucent zones. These are either quite distinct, or create transitions between two colors.
Although not commonly used in jewelry, two-tone sapphire is becoming popular. With its natural work-of-art look, it is a treasure trove for specific requests for bespoke rings and other personalized jewelry, as well as for passionate collectors. Each gem is absolutely unique. Discover all our multicolored sapphires.
Several elements make up sapphires, and they have particular concentrations. For example, a pink sapphire is rich in chromium and a blue sapphire is concentrated in iron and titanium. But if there's yellow with the blue, on a two-tone sapphire, the concentration is not the same everywhere. There are areas with a higher iron content.
This phenomenon depends on changes in geological conditions, which influence the formation of corundum crystals, such as pressure and temperature.
Another original stone to discover:alexandrite.
Two-tone sapphires are popular for jewelry when the colors are close, such as blue and violet, and even more so when the contrast is more marked, such as pink and yellow or green and orange.
The most sought-after, however, are those with a beautiful, smooth, gradual transition zone between the two colors. This creates almost dreamlike effects.
Another criterion of beauty and value is the presence of a dominant color. For example, a two-tone sapphire with a predominantly blue hue and delicate touches of yellow is preferable to an overly variegated stone, for a certain aesthetic coherence.
For connoisseurs, the most beautiful bicolored sapphires are variegated, and this influences the price of these stones. However, some seek out specimens in which the two colors are more clearly separated.
If you're having a ring made to measure, it's your jewel and your preference! But you should know that the most prestigious are usually two-tone blue sapphires in the most traditionally sought-after shades, like royal blue.
The sale of bicolor sapphires is subject to the same conventions as other stones, notably the fact that the issuance of a laboratory certificate will prove their authenticity. Like all the gems we offer, our bicolor sapphires come with a certificate.
The cut or size of the two-tone sapphire is very important, to enhance the different zones. Don't be surprised if you sometimes see slightly atypical shapes: this is necessary to enhance certain color combinations.
Note that the colors must maintain the same appearance according to the light. This is an important point in recognizing a two-tone sapphire, unlike stones that change appearance under different light sources, a phenomenon known as pleochroism.
Bonnot Paris can advise you on the choice of a two-tone sapphire for a ring, both in terms of hue and shape, depending on your project.
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