![Atlas blue Celtic knot tungsten ring in silver-tone and blue tungsten carbide [c:silver]](http://www.atlasmens.com/cdn/shop/files/atlas-blue-celtic-knot-tungsten-ring-silver-and-blue-tungsten-carbide.jpg?v=1792065392&width=120)
Men's Blue Celtic Tungsten Carbide Ring
5
$99.99
Skip to product information
![Atlas blue Celtic knot tungsten ring in silver-tone and blue tungsten carbide [c:silver]](//www.atlasmens.com/cdn/shop/files/atlas-blue-celtic-knot-tungsten-ring-silver-and-blue-tungsten-carbide.jpg?v=1792065392&width=3840)
![Atlas blue Celtic knot tungsten ring in silver-tone and blue tungsten carbide [c:silver]](http://www.atlasmens.com/cdn/shop/files/atlas-blue-celtic-knot-tungsten-ring-silver-and-blue-tungsten-carbide.jpg?v=1792065392&width=3840)
![Atlas ring sizes 5 to 15 with inner diameters from 0.62 to 0.94 inch [u:in]](http://www.atlasmens.com/cdn/shop/files/atlas-blue-celtic-knot-tungsten-ring-ring-sizes-inches.jpg?v=1792065400&width=3840)
Men's Blue Celtic Tungsten Carbide Ring
For the man who never gives up on his people.
$99.99
Atlas fit
Find your ring size
Two minutes with a strip of paper or a soft tape and you will order the right size first time.
Shown in inches and US sizesMeasure at home in 2 minutes
You need a strip of paper (or a string or shoelace), a pen and a ruler.
With a ring that fits (most accurate)
- Lay a ring you wear on that finger on the ruler and measure the inside diameter, edge to edge, in inches.
- Find that diameter in the table below.
With a strip of paper
- Wrap the strip around the base of your finger: it must still slide over the knuckle.
- Mark where it overlaps, lay it flat and measure it in inches: that is the circumference. Find it in the table below.
Measure at the end of the day, when fingers are slightly larger.
No ruler? A bank card is 3.4" long: count how many fit along your strip.
| US | EU | UK | Diameter | Circumf. |
|---|---|---|---|---|
| 5 | 49 | J½ | 0.62" | 1.94" |
| 6 | 52 | L½ | 0.65" | 2.04" |
| 7 | 54 | O | 0.68" | 2.14" |
| 8 | 57 | Q | 0.71" | 2.24" |
| 9 | 59 | S | 0.75" | 2.34" |
| 10 | 62 | U | 0.78" | 2.44" |
| 11 | 65 | W | 0.81" | 2.54" |
| 12 | 67 | Y | 0.84" | 2.65" |
| 13 | 70 | Z+1 | 0.87" | 2.74" |
| 14 | 72 | Z+3 | 0.91" | 2.85" |
| 15 | 75 | Z+4 | 0.94" | 2.94" |
| 16 | 77 | Z+6 | 0.97" | 3.04" |
Half sizes sit halfway between two rows (about 0.4 mm of diameter).
Good to know: measure at the end of the day, when fingers are slightly larger. Wide bands (8 mm and more) feel tighter: if you are between two sizes, take the larger one. Tungsten carbide cannot be resized, so it is worth measuring twice.
Still unsure? Message us with your measurement and we will tell you which size to order.
Silver knotwork over deep blue, on a band that resists scratches.
Atlas held up the sky, and the sky is mostly blue. This ring keeps a strip of it on your hand. The band is tungsten carbide, heavy and highly scratch-resistant, with polished beveled edges leading to a silver-tone Celtic knot set over a deep blue inlay. The contrast gives it depth, and the polished inside sits comfortably. Sizes run from US 5 to 15, including half sizes.
- Shower, gym, beach: it stays on
- Celtic knotwork over a blue inlay
- Half sizes from US 5 to 15
Details & specs
MaterialTungsten carbide
Ring styleComfort-fit band, beveled edges
DesignCeltic knotwork over blue inlay
FinishPolished silver-tone
Ring sizesUS 5 to 15, half sizes
The band is made from tungsten carbide, a material known for its hardness and substantial feel. It is one of the hardest materials used in jewelry, so it resists the scratches and scuffs that dull softer rings. That makes it a sound choice for a ring that stays on through work, training and the weekend.
Polished, beveled edges lead to the central design: a detailed Celtic knot pattern in silver tone, set over a vivid blue inlay. The contrast between the bright lines and the deep color creates depth on a flat band. The inside is smooth and polished in a comfort fit, so the weight feels reassuring rather than intrusive.
How to wear it
The silver tone and blue detail pair well with denim and a white tee. Worn alone on the ring or middle finger, it is a subtle statement. With a dark suit or jacket, the blue can echo a shirt or a tie, and it sits well beside a steel watch. Keep other rings plain so the knotwork keeps its contrast.
Choosing your size
Sizes run from US 5 to 15 in whole and half sizes: 5, 5.5, 6, 6.5, 7, 7.5, 8, 8.5, 9, 9.5, 10, 10.5, then 11.5, 12, 12.5, 13, 13.5, 14, 14.5 and 15. There is no whole size between 10.5 and 11.5. Use a standard ring sizer before ordering; with half sizes available, the half size up is the safe choice if he sits between two.
Why this piece
Scratch-resistant
Tungsten carbide is one of the hardest materials used in jewelry, so the polished finish resists the scuffs of daily wear.
Blue with depth
The silver-tone Celtic knot over a deep blue inlay gives a look that is modern and old at the same time.
A gift for the man who carries everything
For a father who loves Celtic design, a brother or a partner. Half sizes make a close fit easier; between two, take the half size up, and you have 30 days to return it.
Shipping & delivery
Free tracked shipping over $75
Below that, a flat tracked rate is shown at checkout.
- 1Order confirmedYou get an email straight away.Today
- 2Order processedEach piece packed on its own, tracking link by email.Within 24 hours
- 3At your doorDelivery times vary by country.
Returns
30 days to return
Any unworn piece in its original packaging, refunded in full to your original payment method. Return shipping is at your expense, except for a defective or wrong item.
Wrong size
Changed your mind
Not what you expected
- 1Contact usSend us a message with your order number.Within 30 days
- 2Send it backWe reply with the return steps.
- 3RefundedIn full, once the piece is back with us.
Wrong size? Order the size you need and return the other one within 30 days.
Warranty & care
1-year warranty
Against manufacturing defects. See how the warranty works.
Put it on lastAfter perfume and lotion.
Made for everyday wearSteel and tungsten won't rust in the shower, gym, pool or sea. Keep leather pieces dry.
Store pieces apartSo they do not scratch each other.
Soft, dry clothA quick wipe keeps the finish bright.
Tungsten cannot be resizedCheck your size in the size guide before ordering.
Questions
Can the blue Celtic knot tungsten ring stay on at the beach?
Yes. Tungsten carbide shrugs off water and sweat, so the beach and the shower are fine. Rinse it in fresh water afterward to keep the blue inlay bright behind the knotwork.
Is every size between 5 and 15 available?
Almost. Whole and half sizes run from 5 to 15, but there is no whole size between 10.5 and 11.5. If he falls there, 11.5 gives a slightly easier fit and 10.5 a snug one.
How do I clean a tungsten ring?
Warm water and mild soap are enough. Tungsten carbide is very durable, but it is best to avoid harsh chemicals and ultrasonic cleaners.
What are the pros and cons of tungsten carbide?
For hardness: tungsten carbide is one of the hardest materials used in jewelry, so it resists the scratches that dull steel or titanium. The trade-off is that it cannot be resized and can chip under a hard blow.
Is the knot silver-tone?
Yes. The Celtic knot pattern is silver-tone over a vivid blue inlay, between polished beveled edges.
Will I notice the weight?
Yes, in a reassuring way. Tungsten carbide is dense, and the comfort-fit interior keeps that weight from feeling intrusive.
Does it come in size 5?
Yes. Sizes start at US 5, 5.5 and 6, which suits slim fingers, and run up to 15.
I picked 10.5 but need 11.5: can I fix it?
Yes, if you contact us within 2 hours of your order: we correct it before it ships. After that, return it unworn in its original packaging within 30 days and order the 11.5.