Cornflower vs Royal Blue Sapphire: What Really Separates Them
Two trade names, one family of blue. What changes is the velvet, the depth and the light, not the label.
Cornflower blue and royal blue are trade names for two looks of fine blue sapphire, not official grades. Cornflower is a soft, velvety blue to violetish blue. Royal blue can be deeper, more intense and more saturated, without the velvet. Tone and saturation decide what a stone is worth, not the name on the tag.
| Cornflower blue | Royal blue | |
|---|---|---|
| Classic reference | The Kashmir look | The Burmese look |
| Hue | Blue to violetish blue | Blue to violetish blue |
| Tone | Medium-dark | Medium to dark |
| Saturation | Up to vivid | Up to vivid, can be more intense |
| Texture | Velvety | No velvet |
| Watch out for | The name stretched to lighter stones | Can look somewhat inky in warm light |
What is the difference between cornflower and royal blue sapphire?
The gap is in texture and depth more than in hue. Both sit between blue and violetish blue, and both can reach vivid saturation.
- Cornflower blue is the look tied to the old Kashmir stones: violetish blue to pure blue, medium-dark in tone, with minute inclusions that give a velvety softness.
- Royal blue is the look tied to Burmese stones: slightly violetish blue to blue, medium to dark in tone. It can be more intense and more saturated, but it lacks the velvet.
In shops, "cornflower" often gets stretched to lighter stones. Light to medium-light blues, the typical Sri Lankan look, return more light and show more brilliance. Lovely, but a different blue from the velvety reference.
Tone, not name
Where each blue sits, from light to dark
One ruler of tone words. Each bracket shows where a name sits on it.
Tone: how light or dark the blue is
Very light to very dark
Blue sapphire, the whole range
From violetish blue to greenish blue, at every tone.
Covers: Very light, Light, Medium-light, Medium, Medium-dark, Dark, Very dark
Medium to dark
Royal blue, the classic reference
The Burmese look: slightly violetish blue to blue, can be more intense and more saturated, without the velvet.
Covers: Medium, Medium-dark, Dark
Medium-dark
Cornflower blue, the classic reference
The Kashmir look: violetish blue to pure blue, with a velvety softness.
Covers: Medium-dark
Medium-light to medium
Cornflower, as many shops use the name
Stretched to lighter stones, close to the typical Sri Lankan look.
Covers: Medium-light, Medium
Royal blue and cornflower are both one part of the blue sapphire range, and the two references share the medium-dark step. Cornflower as many shops use the name never reaches that step: it sits lighter.
Drawing, not a measurement: each step is a tone word, with no number behind it. These are trade names, and dealers do not all use them the same way.
Our own stock shows it. The stones we list as cornflower are lighter on average, and the two names overlap. Here are six of them, ranked by the colour saturation measured on each photo:
Choose a swatch to see the real stone
Cornflower Blue
Sapphire
Listed as cornflower blue. 1.17 ct, oval cut
Joalys catalogue photo
Royal Blue
Sapphire
Listed as royal blue. 1.24 ct, oval cut
Joalys catalogue photo
Cornflower Blue
Sapphire
Listed as cornflower blue. 1.02 ct, round cut
Joalys catalogue photo
Royal Blue
Sapphire
Listed as royal blue. 1.11 ct, oval cut
Joalys catalogue photo
Cornflower Blue
Sapphire
Listed as cornflower blue. 1.77 ct, round cut
Joalys catalogue photo
Royal Blue
Sapphire
Listed as royal blue. 1.20 ct, octagonal cut
Joalys catalogue photo
Each swatch is the median colour measured on the stone in its photograph, not a colour chosen by hand. Lighting and camera change from one photo to the next, and the stones are not shown to scale.
Are cornflower and royal blue official grades?
No. They are trade terms, and their use is highly subjective: what one dealer calls royal blue, another may not. So read the stone, not the tag, on three points:
- Hue: blue to violetish blue is the most valued. Greenish blue sits at the low end.
- Tone: medium to medium-dark is the target. Very light or very dark is worth less.
- Saturation: strong to vivid, as strong as possible without darkening the stone. A grayish look pulls the price down.
Now try it on six more sapphires from our stock:
Blind test
Which name is this stone listed under?
Six sapphires from our stock. Pick the name you would give each one, then see the name it is listed under.
Stone 1 of 6
1.25 ct, cushion cut
- 1.25 ct, cushion cutWhich name is it listed under?
Listed as royal blue. See this stone
1.02 ct, cushion cutWhich name is it listed under?Listed as cornflower blue. See this stone
1.15 ct, heart cutWhich name is it listed under?Listed as royal blue. See this stone
1.01 ct, cushion cutWhich name is it listed under?Listed as cornflower blue. See this stone
1.05 ct, cushion cutWhich name is it listed under?Listed as cornflower blue. See this stone
1.11 ct, cushion cutWhich name is it listed under?Listed as royal blue. See this stone
These are trade names, and their use is subjective. Read the stone, not the tag.
Real stones from the Joalys stock, Joalys catalogue photos. Names as listed on October 6, 2026. Not to scale.
For the other shades, see our guide to sapphire colors.
How does light change each blue?
Colour is judged face-up in daylight-equivalent light, against a white or light gray background. Warm incandescent light is not suitable for that, and it is where the two blues part ways: a royal blue can look somewhat inky under it.
Two blues, two lights
Two sapphires from our collection: on the left one sold as royal blue (1.28 ct), on the right one sold as cornflower blue (1.77 ct).
Colour is judged in daylight-equivalent light. Warm incandescent light is not suitable for that, and it is where the two blues part ways.
Before you decide, see the stone in daylight, then in a warm, dim room.
My advice: before you decide, see the stone in daylight, then in a warm, dim room. I would take a blue that stays blue at dinner over any name.
Is cornflower or royal blue sapphire more expensive?
Neither name sets the price. The highest prices per carat go to velvety blue to violetish blue stones, in medium to medium-dark tones, with strong to vivid saturation, whatever they are called. Three things matter more than the label:
- Treatment. At least 95 percent of blue sapphires are estimated to be treated in some way, mostly by heat. The result is stable and widely accepted, but fine untreated stones are a tiny share of the market and can cost considerably more. See unheated versus heated sapphire.
- Origin. An authenticated Kashmir sapphire can sell for a lot more than stones from elsewhere.
- Cut. A deep pavilion darkens the colour, a shallow one lightens it.
A price range per name would mislead you. For figures, see sapphire price per carat and our colored gemstone market statistics.
Which blue should you choose?
Choose cornflower blue if you want softness and velvet. Choose royal blue if you want depth and intensity, and check it in dim light first.
Either way, ask whether the stone is heated, and ask for a report from an independent outside laboratory. Then compare real stones: browse our loose blue sapphires.
Six questions to send before you choose your blue
Tick what you already know, then copy the questions as a message.
6 points
A message ready to send to the seller, with all the questions.
See the message
Hello, I am interested in this blue sapphire. Before I decide, could you answer a few questions? 1. Could you send a photo or a short video of the stone face-up in daylight, against a white background? 2. Could you also send one taken in a warm, dim room, under an ordinary lamp? 3. Has this sapphire been heated, and will you state it in writing? 4. Can the stone come with a report from an independent outside laboratory? 5. If an origin is given, what supports it? 6. What are the exact measurements of the stone, including its depth? Thank you for your time.
Nothing is sent or stored: the ticks stay in this browser.
Quick answers
Is cornflower blue lighter than royal blue?
Are cornflower blue sapphires rare?
Where do cornflower blue sapphires come from?
Is sapphire blue the same as royal blue?
The bottom line
Cornflower is the soft, velvety blue; royal blue is the deep, intense one. The names are loose, so trust tone, saturation and dim light, then check the treatment on the laboratory report.
