Blue Sapphire: The Complete Guide (Meaning, Price & Origin)
Marie6/7/2026
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As a specialist coloured-stone dealer — and the only French house to hold ICA membership (International Colored Gemstone Association) — we source our sapphires directly at origin, through our offices in Sri Lanka and Bangkok. This is our complete guide to understanding, evaluating and choosing a teal sapphire with confidence.
The teal sapphire belongs to the same family as blue sapphire and ruby, and reaches a hardness of 9 out of 10 on the Mohs scale. Its blue-green colour arises from the combined presence of iron and titanium. Yet "teal" is not a single shade: it is an entire spectrum, ranging from peacock blue to lagoon green. Understanding where your stone sits on that axis is already understanding the essentials.
When blue holds the upper hand, teal evokes the depths of the sea and the iridescence of a peacock's plumage. A more classical shade, close to blue sapphire yet quickened by a breath of green that gives it life. The choice for those who favour understated elegance.
When green takes over, teal becomes a tropical lagoon or a woodland shade. Rarer and more assertive, it draws those who seek a stone that is genuinely singular, far from the beaten path.
There is no objectively "right" teal. The most sought-after shade — the celebrated "mermaid", a 50/50 balance of blue and green — is not necessarily the one that will suit you best. The finest teal sapphire is the one whose colour speaks to you, seen in natural light. This guide gives you the tools to compare what is genuinely comparable.
A teal sapphire is, first and foremost, a sapphire — the same mineral species as the blue sapphire, sharing its remarkable hardness and brilliance, differing only in colour. Its name comes from the English word teal, the common teal — a duck whose plumage displays that same deep blue-green. Where the blue sapphire owes its hue to iron and titanium, the teal arises from a particular balance of those same elements, tipping the colour toward green.
Its hardness of 9/10 makes it one of the most durable stones in existence, second only to diamond. In practice, it resists everyday scratches, withstands knocks and has no fear of water — a decisive advantage for an engagement ring worn every day, far more so than the more delicate emerald. Another distinctive trait: the teal sapphire is often colour-shifting, meaning it can reveal subtly different shades depending on the angle — a touch more blue from one side, a touch more green from the other. Far from a flaw, this play of light is part of its charm.
The teal sapphire has become a modern alternative to both the diamond and the classic blue sapphire. Its singular colour and relative accessibility have made it, within just a few seasons, one of the most sought-after stones in contemporary jewellery — without ever forfeiting the nobility and resilience that have defined the sapphire's reputation for centuries.
Unlike the blue sapphire, the teal has no equivalent of Kashmir. Here, it is less the prestige of origin that matters than the colour signature it imparts to the stone. Four major regions dominate the market.
The luminous teal
The "island of gems" yields some of the most luminous and transparent teals, with a brilliant crystal. Well-balanced blue-green tones that appeal to lovers of vivid stones. A proportion are heated.
Accessible balance
A recent, abundant and varied source. Madagascar produces vibrant, well-balanced teals at particularly accessible prices. Often the best value for money on the market.
The connoisseur's favourite
Soft, earthy, slightly grey teals with a highly sought-after "mossy" character — and frequently unheated. An origin that commands a premium, particularly in the United States.
The deep tones
Iron-rich Australia produces darker, decidedly green teals that form the backbone of the commercial teal market. Nigeria and Tanzania contribute deep, saturated "petrol" tones.
Unlike the "pigeon's blood" of ruby, "teal" is not a strict laboratory qualification: it is a name the market invented to describe a balanced blue-green. Sub-designations such as "mermaid", "lagoon" or "peacock" belong to commercial language, not to any fixed standard. Which is why it matters to look at the stone itself, in daylight, rather than at the label attached to it.
As with any sapphire, the value of a teal can be read through a few key criteria. Here, however, one additional factor comes into play: the precise balance between blue and green, which takes precedence over almost everything else.
The defining criterion. A vivid, well-saturated, harmonious blue-green — neither too dark nor too grey — commands the highest value. The 50/50 "mermaid" balance is the most coveted, though personal preference always has the final word.
Teal sapphires often carry a few discreet natural inclusions, which simply authenticate the stone. A teal that appears perfectly clean yet is priced very low should raise suspicion: synthetic material is a real possibility.
A well-considered cut brings colour and brilliance to life, and manages the stone's dual-toned nature to present the desired hue to the eye. The cutter must weigh retained carat weight against the most beautiful colour.
Fine teal sapphires remain scarce in larger sizes. Beyond 2 carats, the price per carat rises sharply, particularly for unheated stones with a perfect colour balance.
Every teal sapphire we offer is accompanied by an independent laboratory certificate (SSEF, GRS, ICA, Bellerophon…) confirming its origin, treatment and characteristics. Our direct sourcing, with no intermediaries, ensures you receive the stone at its true market value.
Heating is an age-old treatment, carried out at very high temperatures to intensify colour and improve transparency. It is a time-honoured, stable process, internationally accepted provided it is declared on the certificate. The majority of teal sapphires on the market are heated, particularly Australian stones, which tend to be darker in their rough state.
An unheated teal sapphire ("no heat" or "NH" on the certificate) retains all of its natural characteristics. Rarer by nature, it commands a premium of around 30 to 50 % at equivalent quality — a premium that grows more pronounced the finer the colour. Montana, along with a portion of Sri Lankan and Madagascan production, yields superb examples.
Bonnot Paris offers both options — heated and unheated — always with complete transparency. We do not, however, sell any sapphire treated with beryllium or lead glass, nor any synthetic stone: such processes alter the very nature of the gem and have no place in an exceptional creation.
The good news: teal sapphire remains more accessible than royal blue sapphire or padparadscha. Its price depends on colour balance, clarity, origin and treatment. Below are practical benchmarks, expressed as price per carat for a stone of fine quality.
To put these figures in perspective: a gem-grade Kashmir blue sapphire can fetch several tens of thousands of euros per carat at auction, with record prices surpassing one million. The teal sapphire, by contrast, offers the same mineral nobility, the same hardness and a colour far less commonly seen in everyday jewellery — at a fraction of the price. That is precisely what makes it the rising star of contemporary fine jewellery.
Thanks to our direct sourcing from our offices in Sri Lanka and Bangkok, you pay the true value of the stone — not the successive margins of three or four intermediaries. For a given budget, you access a quality generally superior to that of traditional retailers.
The term "teal" covers a family of blue-green hues that are easily confused. Some are superb sapphires in their own right, others are stones of entirely different species. Here is how to tell them apart.
| Stone | What sets it apart | Hardness |
|---|---|---|
| Teal sapphire | Corundum Blue and green blended in balance throughout the stone, a homogeneous hue. | 9 / 10 |
| Green sapphire | The same mineral, but the colour has shifted to a predominantly green tone, often less saturated. More limited commercial demand than teal. | 9 / 10 |
| Parti-colour sapphire | A polychrome corundum displaying distinct colour zones (e.g. a blue area and a green area) visible to the naked eye. | 9 / 10 |
| Tourmaline (indicolite) | A different mineral species. Beautiful blue-greens are possible, but it is less hard and more fragile than sapphire. | 7 – 7.5 |
The timeless classic
For those who love the mineral but prefer the depth of a pure blue over the blue-green of teal. The absolute reference in fine jewellery, a symbol of fidelity and wisdom.
The pink-orange rarity
The other coloured sapphire captivating contemporary fine jewellery: a delicate and exceedingly rare pink-orange, for those seeking a warm hue as singular as teal.
The colour of teal lends itself to every jewellery aesthetic, from the most classic to the most contemporary. Here are four bespoke creations featuring unheated teal sapphires from Madagascar, to inspire you.
Daisy style
A 2.03 ct teal sapphire encircled by a double halo: a first ring of mauve sapphires, then a corolla of round diamonds in the shape of a flower. Romantic and colourful.
Floral style
An oval teal set in claw prongs, surrounded by round and marquise F/VS diamonds forming petal shapes, on yellow gold that warms the blue-green tones. Feminine and radiant.
Art deco style
A 1.07 ct teal in an octagonal bezel setting pavé-set with F/VS diamonds, on white gold. A geometry inspired by the 1920s — modern and graphic.
Solitaire style
A 1.53 ct oval teal in a bezel setting, on yellow gold, in absolute purity. The stone alone, protected and magnified, with nothing to distract from it. Timeless.
Each of these rings is a unique piece, fashioned by hand around a directly sourced stone. You may draw inspiration from them to imagine your own: we interpret the spirit of a design without ever reproducing it exactly. Discover bespoke creation →
It is a natural sapphire whose colour blends blue and green in a subtle balance, evoking lagoons and forests. It belongs to the same mineral family as ruby, and its hue comes from the combined presence of iron and titanium. Its name comes from the English word teal, a duck with blue-green plumage.
Absolutely. With a hardness of 9/10, a teal sapphire withstands daily wear without difficulty. Its blue-green colour offers a modern and personal alternative to both diamond and classic blue sapphire — an ideal choice for an engagement ring unlike any other.
Sri Lanka (luminous and transparent teals), Madagascar (well-balanced and accessible), Montana (soft, earthy, often unheated) and Australia (darker and greener). Nigeria and Tanzania round out the more recent sources. Bonnot Paris sources directly through its offices in Sri Lanka and Bangkok.
A teal blends blue and green in a smooth, homogeneous balance. A green sapphire has shifted to a distinctly green dominance. A parti-colour stone, by contrast, displays separate zones of colour visible to the naked eye. Three different effects from the same mineral species.
Expect roughly €600 to €1,200 per carat for a good-quality heated teal (~1 ct), €1,200 to €3,000 per carat for a fine 1 to 2 carat stone with well-balanced colour, and €3,000 to €8,000 per carat for an exceptional unheated stone above 2 carats. It remains more accessible than royal blue sapphire or padparadscha.
Three safeguards: a certificate from an independent laboratory (SSEF, GRS, GIA, ICA), a 10x loupe examination that reveals the natural inclusions absent in synthetics, and purchasing from a trusted professional — a dealer-jeweller who is a member of the ICA. Be wary of a teal that is too transparent, too perfect and too inexpensive.
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As a specialist coloured-stone dealer — and the only French house to hold ICA membership (International Colored Gemstone Association) — we source our sapphires directly at origin, through our offices in Sri Lanka and Bangkok. This is our complete guide to understanding, evaluating and choosing a teal sapphire with confidence.
The teal sapphire belongs to the same family as blue sapphire and ruby, and reaches a hardness of 9 out of 10 on the Mohs scale. Its blue-green colour arises from the combined presence of iron and titanium. Yet "teal" is not a single shade: it is an entire spectrum, ranging from peacock blue to lagoon green. Understanding where your stone sits on that axis is already understanding the essentials.
When blue holds the upper hand, teal evokes the depths of the sea and the iridescence of a peacock's plumage. A more classical shade, close to blue sapphire yet quickened by a breath of green that gives it life. The choice for those who favour understated elegance.
When green takes over, teal becomes a tropical lagoon or a woodland shade. Rarer and more assertive, it draws those who seek a stone that is genuinely singular, far from the beaten path.
There is no objectively "right" teal. The most sought-after shade — the celebrated "mermaid", a 50/50 balance of blue and green — is not necessarily the one that will suit you best. The finest teal sapphire is the one whose colour speaks to you, seen in natural light. This guide gives you the tools to compare what is genuinely comparable.
A teal sapphire is, first and foremost, a sapphire — the same mineral species as the blue sapphire, sharing its remarkable hardness and brilliance, differing only in colour. Its name comes from the English word teal, the common teal — a duck whose plumage displays that same deep blue-green. Where the blue sapphire owes its hue to iron and titanium, the teal arises from a particular balance of those same elements, tipping the colour toward green.
Its hardness of 9/10 makes it one of the most durable stones in existence, second only to diamond. In practice, it resists everyday scratches, withstands knocks and has no fear of water — a decisive advantage for an engagement ring worn every day, far more so than the more delicate emerald. Another distinctive trait: the teal sapphire is often colour-shifting, meaning it can reveal subtly different shades depending on the angle — a touch more blue from one side, a touch more green from the other. Far from a flaw, this play of light is part of its charm.
The teal sapphire has become a modern alternative to both the diamond and the classic blue sapphire. Its singular colour and relative accessibility have made it, within just a few seasons, one of the most sought-after stones in contemporary jewellery — without ever forfeiting the nobility and resilience that have defined the sapphire's reputation for centuries.
Unlike the blue sapphire, the teal has no equivalent of Kashmir. Here, it is less the prestige of origin that matters than the colour signature it imparts to the stone. Four major regions dominate the market.
The luminous teal
The "island of gems" yields some of the most luminous and transparent teals, with a brilliant crystal. Well-balanced blue-green tones that appeal to lovers of vivid stones. A proportion are heated.
Accessible balance
A recent, abundant and varied source. Madagascar produces vibrant, well-balanced teals at particularly accessible prices. Often the best value for money on the market.
The connoisseur's favourite
Soft, earthy, slightly grey teals with a highly sought-after "mossy" character — and frequently unheated. An origin that commands a premium, particularly in the United States.
The deep tones
Iron-rich Australia produces darker, decidedly green teals that form the backbone of the commercial teal market. Nigeria and Tanzania contribute deep, saturated "petrol" tones.
Unlike the "pigeon's blood" of ruby, "teal" is not a strict laboratory qualification: it is a name the market invented to describe a balanced blue-green. Sub-designations such as "mermaid", "lagoon" or "peacock" belong to commercial language, not to any fixed standard. Which is why it matters to look at the stone itself, in daylight, rather than at the label attached to it.
As with any sapphire, the value of a teal can be read through a few key criteria. Here, however, one additional factor comes into play: the precise balance between blue and green, which takes precedence over almost everything else.
The defining criterion. A vivid, well-saturated, harmonious blue-green — neither too dark nor too grey — commands the highest value. The 50/50 "mermaid" balance is the most coveted, though personal preference always has the final word.
Teal sapphires often carry a few discreet natural inclusions, which simply authenticate the stone. A teal that appears perfectly clean yet is priced very low should raise suspicion: synthetic material is a real possibility.
A well-considered cut brings colour and brilliance to life, and manages the stone's dual-toned nature to present the desired hue to the eye. The cutter must weigh retained carat weight against the most beautiful colour.
Fine teal sapphires remain scarce in larger sizes. Beyond 2 carats, the price per carat rises sharply, particularly for unheated stones with a perfect colour balance.
Every teal sapphire we offer is accompanied by an independent laboratory certificate (SSEF, GRS, ICA, Bellerophon…) confirming its origin, treatment and characteristics. Our direct sourcing, with no intermediaries, ensures you receive the stone at its true market value.
Heating is an age-old treatment, carried out at very high temperatures to intensify colour and improve transparency. It is a time-honoured, stable process, internationally accepted provided it is declared on the certificate. The majority of teal sapphires on the market are heated, particularly Australian stones, which tend to be darker in their rough state.
An unheated teal sapphire ("no heat" or "NH" on the certificate) retains all of its natural characteristics. Rarer by nature, it commands a premium of around 30 to 50 % at equivalent quality — a premium that grows more pronounced the finer the colour. Montana, along with a portion of Sri Lankan and Madagascan production, yields superb examples.
Bonnot Paris offers both options — heated and unheated — always with complete transparency. We do not, however, sell any sapphire treated with beryllium or lead glass, nor any synthetic stone: such processes alter the very nature of the gem and have no place in an exceptional creation.
The good news: teal sapphire remains more accessible than royal blue sapphire or padparadscha. Its price depends on colour balance, clarity, origin and treatment. Below are practical benchmarks, expressed as price per carat for a stone of fine quality.
To put these figures in perspective: a gem-grade Kashmir blue sapphire can fetch several tens of thousands of euros per carat at auction, with record prices surpassing one million. The teal sapphire, by contrast, offers the same mineral nobility, the same hardness and a colour far less commonly seen in everyday jewellery — at a fraction of the price. That is precisely what makes it the rising star of contemporary fine jewellery.
Thanks to our direct sourcing from our offices in Sri Lanka and Bangkok, you pay the true value of the stone — not the successive margins of three or four intermediaries. For a given budget, you access a quality generally superior to that of traditional retailers.
The term "teal" covers a family of blue-green hues that are easily confused. Some are superb sapphires in their own right, others are stones of entirely different species. Here is how to tell them apart.
| Stone | What sets it apart | Hardness |
|---|---|---|
| Teal sapphire | Corundum Blue and green blended in balance throughout the stone, a homogeneous hue. | 9 / 10 |
| Green sapphire | The same mineral, but the colour has shifted to a predominantly green tone, often less saturated. More limited commercial demand than teal. | 9 / 10 |
| Parti-colour sapphire | A polychrome corundum displaying distinct colour zones (e.g. a blue area and a green area) visible to the naked eye. | 9 / 10 |
| Tourmaline (indicolite) | A different mineral species. Beautiful blue-greens are possible, but it is less hard and more fragile than sapphire. | 7 – 7.5 |
The timeless classic
For those who love the mineral but prefer the depth of a pure blue over the blue-green of teal. The absolute reference in fine jewellery, a symbol of fidelity and wisdom.
The pink-orange rarity
The other coloured sapphire captivating contemporary fine jewellery: a delicate and exceedingly rare pink-orange, for those seeking a warm hue as singular as teal.
The colour of teal lends itself to every jewellery aesthetic, from the most classic to the most contemporary. Here are four bespoke creations featuring unheated teal sapphires from Madagascar, to inspire you.
Daisy style
A 2.03 ct teal sapphire encircled by a double halo: a first ring of mauve sapphires, then a corolla of round diamonds in the shape of a flower. Romantic and colourful.
Floral style
An oval teal set in claw prongs, surrounded by round and marquise F/VS diamonds forming petal shapes, on yellow gold that warms the blue-green tones. Feminine and radiant.
Art deco style
A 1.07 ct teal in an octagonal bezel setting pavé-set with F/VS diamonds, on white gold. A geometry inspired by the 1920s — modern and graphic.
Solitaire style
A 1.53 ct oval teal in a bezel setting, on yellow gold, in absolute purity. The stone alone, protected and magnified, with nothing to distract from it. Timeless.
Each of these rings is a unique piece, fashioned by hand around a directly sourced stone. You may draw inspiration from them to imagine your own: we interpret the spirit of a design without ever reproducing it exactly. Discover bespoke creation →
It is a natural sapphire whose colour blends blue and green in a subtle balance, evoking lagoons and forests. It belongs to the same mineral family as ruby, and its hue comes from the combined presence of iron and titanium. Its name comes from the English word teal, a duck with blue-green plumage.
Absolutely. With a hardness of 9/10, a teal sapphire withstands daily wear without difficulty. Its blue-green colour offers a modern and personal alternative to both diamond and classic blue sapphire — an ideal choice for an engagement ring unlike any other.
Sri Lanka (luminous and transparent teals), Madagascar (well-balanced and accessible), Montana (soft, earthy, often unheated) and Australia (darker and greener). Nigeria and Tanzania round out the more recent sources. Bonnot Paris sources directly through its offices in Sri Lanka and Bangkok.
A teal blends blue and green in a smooth, homogeneous balance. A green sapphire has shifted to a distinctly green dominance. A parti-colour stone, by contrast, displays separate zones of colour visible to the naked eye. Three different effects from the same mineral species.
Expect roughly €600 to €1,200 per carat for a good-quality heated teal (~1 ct), €1,200 to €3,000 per carat for a fine 1 to 2 carat stone with well-balanced colour, and €3,000 to €8,000 per carat for an exceptional unheated stone above 2 carats. It remains more accessible than royal blue sapphire or padparadscha.
Three safeguards: a certificate from an independent laboratory (SSEF, GRS, GIA, ICA), a 10x loupe examination that reveals the natural inclusions absent in synthetics, and purchasing from a trusted professional — a dealer-jeweller who is a member of the ICA. Be wary of a teal that is too transparent, too perfect and too inexpensive.
Partagez ce post
Découvrez d'autres articles qui peuvent vous intéresser pour approfondir votre passion pour la joaillerie !
View all