Rainbow sapphire ring, handmade in Switzerland
Rainbow sapphire ring, handmade in Switzerland
The Rainbow Eternity is our signature piece: a full circle of coloured sapphires, from violet to blue, green to yellow, through to orange and pink. We make it by hand in our atelier in Balerna, Ticino, in 18k rose gold and in your ring size.
You can see it and try it on in our boutique in Locarno or at the atelier in Balerna, by appointment.

Every colour except red
Sapphire is corundum, the same gem as ruby. GIA, the Gemological Institute of America, puts it simply: red corundum is called ruby, and every other colour is sapphire. Besides blue, there are pink, orange, yellow, green, violet and purple sapphires.
In its purest state corundum is colourless: it is made only of aluminium and oxygen. Its colour comes from tiny traces of other elements.
Blue sapphire
IRON AND TITANIUMWhen corundum contains iron and titanium, the stone is a blue sapphire. The more iron it holds, the darker the blue.
According to the GIA, the most valued are velvety blue to violetish blue, in medium to medium-dark tones.
Ruby
CHROMIUMRuby’s red comes from chromium: the more there is, the stronger the red. Chromium also causes fluorescence, which makes the red even more vivid.
It is a ruby only if red dominates: if the colour is too light, the stone is a pink sapphire.
Our sapphires, one by one
Every colour of corundum except red is a sapphire. These are ours, natural like all the coloured stones in our jewellery, lined up in the atelier before they become a Rainbow: each shade beside the closest one.
PadparadschaThe mix of pink and orange has its own trade name: padparadscha.
ColourlessWith no traces of other elements, corundum stays colourless: this too is a sapphire.
Source: GIA, Gemological Institute of America (gia.edu, Ruby and Sapphire).

One by one, all the same size
For a Rainbow we choose each sapphire by hand and set them in the order of the rainbow, so one colour flows into the next. The stones are calibrated, all the same size, and hand-set, which keeps the circle perfectly even.
Coloured sapphire jewellery
Pastello
CHF 3’890Rainbow Circle
CHF 2’790Rainbow Eternity
CHF 3’890
Rainbow Circle, the rainbow on a chain
The same sapphires run around a circle of 18k rose gold, hung on a fine chain. The colours flow without a break and bring colour close to the face.
If you prefer softer tones, there is Pastello: pink, lilac and pale blue sapphires on 18k white gold. And if you have another coloured-sapphire piece in mind, we will design it with you.
Your questions
The questions we are asked most often about coloured sapphire rings. All our rings set all the way round are on the eternity rings page.
What stones are these?
Coloured sapphires. Sapphire comes in every colour except red: a red sapphire is called a ruby.
What is the difference between sapphire and ruby?
None in the material: both are corundum. Only the colour changes. Red is ruby, every other colour is sapphire.
Is sapphire durable?
Sapphire is 9 on the Mohs scale, second only to diamond. It is a stone for every day.
Are the sapphires natural?
Yes: all our coloured stones are natural. Only the diamond can be chosen natural or lab-grown.
Why are the colours so even?
Because we choose every sapphire by hand and set them in order, from violet to pink, all the same size.
How much is the Rainbow Eternity?
CHF 3’890 in 18k rose gold, VAT included. The Rainbow Circle pendant is CHF 2’790.
Which sizes do you make?
From size 8 to 23 (Swiss sizes).
Can it be resized later?
An eternity ring has stones all the way round, so resizing it later is difficult. That is why we make it in your size from the start, measured at the atelier with our sizing rings.
Is it available in other metals?
The model on our website is 18k rose gold. Other metals can be requested at the atelier.
Where can I see it?
At the atelier in Balerna, Monday to Friday (Saturday on request), or at the boutique in Locarno, Wednesday to Saturday. Always by appointment.
I live far from Ticino. What can I do?
Start with an online consultation. Delivery within Switzerland is free.
How do I find my ring size?
At the atelier we measure it with our sizing rings. From home, the size guide on the product page will help.
Try it on
At the atelier in Balerna, Monday to Friday (Saturday on request), or at the boutique in Locarno, Wednesday to Saturday. Always by appointment.
White gold
Yellow gold
Rose gold
Platinum
Princess
Oval
Cushion
Pear
Asscher
Round brilliant
Heart
Emerald
Steel
Tantalum