Sapphire colours: the complete shade guide
François Deprez5/8/2026
Sapphire Price Guide: Understanding the Value of an Exceptional Stone
Bonnot Paris
April 29, 2026
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5 min read
Bonnot Paris · The Journal of Precious Stones 2026
Sapphire prices: understanding its value in 2026
What does a sapphire really cost? The four criteria that determine price, per-carat ranges, the real question of heating — and the pitfalls we encounter every week at 10 rue de la Paix.
The price of a sapphire is far from arbitrary: it is an alchemy of colour, clarity, origin and treatment. The key is knowing how to read it.
In 2026, the precious-stone market has evolved: while the diamond remains a classic, the sapphire has taken on a leading role in engagement projects — and with it, price variations that can be bewildering. This guide gives you the tools we use ourselves, as dealers, to assess a stone.
One principle above all: no serious valuation can be made without a certificate. All our stones are certified by independent laboratories — GIA, London Gem Lab, Bellerophon and other prestigious laboratories. Discover our direct sourcing →
01
The mechanics
The 4 criteria that determine the price of a sapphire
Weight (carat) drives price upward exponentially, yet a 1-carat sapphire has no fixed price. Its value depends on four factors, in this order:
01
Colour
Saturation dictates price. A vivid, even blue is worth more than a washed-out blue; a greyish or overly dark blue can lose up to half its value.
02
Clarity
Does the stone have inclusions visible to the naked eye? An eye-clean gem commands a significantly higher price.
03
Origin
A Kashmir or Ceylon sapphire will command a far higher price. Madagascar today offers superb stones at gentler prices.
04
An unheated, entirely natural sapphire commands a soaring premium. Heated or unheated: what it changes →
Benchmark
Still uncertain about the shade? Our guide to sapphire colours reviews blue, teal, padparadscha and every other shade.
02
The classic mistake
Beware the trap of the « price per gram »
Let us be clear: a sapphire is never valued by the gram, but by the carat (0.20 grams). Thinking in grams means applying a precious-metal logic to a stone whose value lies elsewhere: in the rarity of a colour, the clarity of a crystal, an origin.
This is the first reflex to adopt when faced with a listing: if the seller speaks in grams, or displays an enticing « price per gram », walk away. And remember that two stones of the same weight can vary tenfold in price — only reading the certificate can explain why.
03
The figures
1 carat of sapphire: what price should you expect?
The range is vast: you can find a 1-carat sapphire for under €1,500, while an exceptional gem will exceed €6,000, or even €10,000. Why such a gap? Rarity dictates the rule.
And the price per carat rises with size: a 3-carat sapphire is infinitely rarer — and therefore more expensive per carat — than a 1-carat sapphire. This is why it is essential to insist on a gemmological certificate when making your purchase.
Three set stones, three real budgets
Teal sapphire
Shoulder-set ring, round teal
€4,920
Blue sapphire
Vintage ring, oval blue
€9,600
Padparadscha
Shoulder-set ring, padparadscha
€12,600
Prices observed in August 2026; each stone is unique.
The Bonnot standard
Every stone is certified by the foremost independent experts: GIA, London Gem Lab, Bellerophon and other prestigious laboratories. The certificate attests to the species, origin and treatment — it is what makes two quotes genuinely comparable.
04
The reference
The king of stones: blue sapphire prices
The blue sapphire remains the benchmark. In 2026, demand for « Royal » and « Cornflower » blues has driven prices higher, due in particular to the progressive exhaustion of certain mines in Madagascar and Sri Lanka.
| Shade | Character | Effect on price |
|---|---|---|
| Royal Blue | Deep, intense, saturated. | Maximum value |
| Cornflower | Velvety cornflower blue, lighter, highly sought after for engagement rings. | Very high value |
| Greyish blue / too dark | Dull colour, closed to the light. | Up to −50% |
Expert note
Sapphires from Kashmir or Burma are in a class of their own: some exceed $30,000 per carat at auction. For an engagement ring project, Ceylon and Madagascar offer the finest balance between beauty and budget. Keen to see the colour worn? Browse our blue sapphire engagement rings.
05
The 2026 rankings
Padparadscha, teal, pink: the colours on the rise
Padparadscha
The star of 2026
A subtle blend of pink and orange reminiscent of the lotus blossom, this is the rarest colour in the world: the 50/50 balance between the two hues is a geological caprice. The designation requires a laboratory certificate (GIA, GRS, Lotus).
Teal
The rising value
A deep blue-green that shifts with the light: the defining trend in contemporary jewellery has driven its value upward, though it has yet to reach the heights of royal blue. The perfect moment to take advantage.
Pink
The romantic
From soft blush to vivid pink, a shade very much in demand for engagement rings, with the finest specimens sourced from Madagascar and Sri Lanka.
Yellow, violet, green
The best beauty-to-price ratio
Less talked about, these shades today yield spectacular stones at prices that remain accessible — the discerning choice for a stone with real character.
06
Treatment
Heated or unheated: the impact on price
90% of sapphires on the market are heat-treated. This is an age-old and widely accepted practice that mimics nature to enhance colour and clarity: the stone remains natural and may be worn for a lifetime. A unheated sapphire of fine colour is considerably rarer — its certificate states this explicitly, and its price reflects it accordingly.
The subject deserves a guide of its own: heated or unheated sapphire — which to choose? The essential point to remember: declared heating is not a flaw; the treatments we refuse (beryllium, lead glass, irradiation) are.
07
Key takeaways
The mechanics of pricing in 2026: three rules
01
The exponential rule
A 3-carat sapphire is not worth three times the price of a 1-carat stone — it may be worth ten times as much. Rarity increases exponentially with volume.
02
Colour above all
At equal weight, it is saturation that drives the price. A 1.5 ct stone of vivid colour is preferable to a dull 2 ct.
03
The certificate, non-negotiable
Origin, treatment, species: without an independent laboratory certificate, no comparison is possible. It is the first document to ask for.
And for the complete ring?
Stone + bespoke setting: budgets, cost items and real-world examples are detailed in our sapphire engagement ring guide.
08
Frequently asked questions
The price of sapphire in questions
What is the price of a 1-carat sapphire?
From under €1,500 to over €6,000–10,000 for an exceptional gemstone. Colour, clarity, origin and treatment account for the difference — the certificate makes it possible to understand it.
Why do two sapphires of the same weight have such different prices?
Because weight is only one criterion among four. At equal carat weight, colour saturation dictates the price: a greyish or overly dark blue can lose half its value. Clarity, origin and treatment add further.
Is an unheated sapphire really worth more?
Yes: 90% of sapphires on the market are heated, and the rarity of unheated stones comes at a price. Full details in our guide heated or unheated sapphire.
Does price depend on colour?
Greatly: royal blue and cornflower as the reference points, padparadscha at the pinnacle of rarity, teal on a strong upward trend, yellow/violet/green offering the best beauty-to-price ratio. See all sapphire colours.
Is sapphire a good investment?
Fine certified, unheated stones have seen their value grow, driven by the depletion of certain mines. But a ring is bought first and foremost to be worn: if the heritage dimension matters, prioritise the certificate, colour and absence of treatment.
What budget is needed for the complete ring?
Our creations start at around €2,500, with the heart of the collection between €4,500 and €12,000. Everything is detailed in the sapphire engagement ring guide.
Our sapphires
Keen to see the stones in person?
Discover our certified sapphires at trade prices, or let's talk about your project — in Paris, at 10 rue de la Paix, or remotely.
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