8mm Black Tungsten Carbide Blue Groove Ring

€62,53

Tungsten carbide · Black brushed finish · Blue center groove · 8mm wide · US sizes 6-12

Black on the outside. Blue where it counts.

A wide black band with a thin line of blue running through the center, and the same blue hidden inside the ring where only you see it. The brushed surface keeps the black quiet, so the groove catches the light on its own. It reads solid on the hand without shouting.

✓Tungsten carbide resists scratches and daily knocks
✓8mm width with real weight on the finger
✓Blue groove and blue interior for two-tone contrast

Full description+

The piece

The band is tungsten carbide, one of the hardest materials used in men's rings, which is why it holds a finish far better than softer metals. The outer surface is brushed black with beveled edges, so light rolls off the sides instead of flashing.

A single blue groove runs around the center of the band, and the inside of the ring carries the same blue tone with a TUNGSTEN CARBIDE marking. At 8mm wide, it sits broad across the finger and stays balanced thanks to the smooth inner surface.

How to wear it

Wear it alone on the ring finger as a wedding or commitment band, or on the index finger with a black or steel watch for a matched look. The black finish sits well with denim, a white tee, and dark outerwear, and stays understated under a shirt cuff at work. Keep other rings minimal so the blue line stays the detail people notice.

Choosing your size

Offered in US sizes 6, 8, 9, 11 and 12. This is an 8mm band, so it covers more of the finger than a thin ring; if you are between sizes or your knuckle is larger than the base of your finger, take the larger size. Tungsten carbide cannot be resized, so measure an existing ring of similar width before ordering.

Why this piece

01
Built for everyday handsTungsten carbide is very hard and highly scratch-resistant, so the brushed black surface keeps its look through daily wear.
02
Two-tone without the noiseBlack brushed metal with one blue line and a blue interior. The contrast is there when you look, not before.
03
An easy gift to get rightA neutral black band suits most styles, and it works for a wedding, a birthday, or an anniversary.

Specifications

MaterialTungsten Carbide

FinishBlack / Blue

Width8mm

Ring SizesUS 6-12

Questions

Will the black finish wear off?

Tungsten carbide is one of the hardest materials used in jewelry and resists scratching well, though like any finish it can mark if struck against hard surfaces such as stone or concrete.

How do I care for it?

Wipe it with a soft, dry cloth to restore the brushed look, and remove it before heavy lifting or work with tools.

Can it be resized later?

No. Tungsten carbide cannot be resized, so choose your size carefully and size up if you are between sizes on an 8mm band.

Ring Size 6 11 8 12 9

Not sure of your size? We've got you.

Atlas Fit

Find your size

All Atlas pieces are crafted to true men's proportions. Measure twice, wear forever.

How to measure: wrap a strip of paper around the base of your finger, mark where it overlaps, then measure the length in mm. That's your inner circumference.

Atlas size	EU	US	UK	Diameter (mm)
S	54	7	N	17.3
M	57	8	P	18.1
L	60	9	R	19.0
XL	63	10	T	19.8
XXL	66	11	V	20.6

Tip: measure at the end of the day when fingers are slightly larger. Knuckle wider than the base? Size up.

How to measure: wrap a soft tape around your wrist where you'd wear a watch. Add 1cm for a comfort fit, 2cm for a relaxed drape.

Atlas size	Wrist (cm)	Bracelet length (cm)
S	15.5–16.5	17.5
M	16.5–17.5	18.5
L	17.5–18.5	19.5
XL	18.5–19.5	20.5

Most men: M (16.5–17.5cm wrist) is our best-selling size.

How to wear: chain length is measured tip-to-tip. Below: how each length sits on a 6'0" frame.

Length	Sits at	Best for
45cm / 18"	Collarbone	Tucked or under a tee
50cm / 20"	Just below collarbone	Most versatile · best-seller
55cm / 22"	Mid-chest	Layered with a pendant
60cm / 24"	Lower chest	Statement chains

Tip: when in doubt, 50cm is the universal Atlas length — clean over a tee, sharp under a collar.

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1-Year Warranty Hand-finished & built to last.

Water & Sweat Proof Train, swim, live in it.

Signature Box Gift-ready, every order.

Free Shipping Worldwide. Tracked & insured.

Atlas Promise

Shipped & Delivered

Priority Dispatch · Order in — to ship today Your piece leaves our atelier the same day, fully tracked & insured.
Free Worldwide Delivery Tracked & insured to your door. Real-time tracking link sent the moment your order leaves our atelier.
Signature Atlas Box · Gift-Ready Every order ships in our matte black presentation case. Effortless gifting, every time.
30-Day Easy Returns Not the right fit? Send it back within 30 days for a full refund. Our team takes care of every step.

Every Atlas piece is covered by our 1-year warranty against manufacturing defects. We stand behind the craftsmanship of every ring, chain and pendant we forge.

Atlas jewellery is built to be worn every day. Our pieces are resistant to water and sweat — train, swim, live in them. For pieces that need attention, contact our care team and we'll make it right.

Each order ships in the Atlas signature box — a matte black presentation case finished with our embossed logo and gold foil interior detail.

Inside, your piece rests on a velvet cushion, wrapped in a microfiber pouch for safekeeping. Built to be opened. Built to be kept.

Free worldwide shipping on every order. Orders placed before 2pm CET leave our atelier within 24 hours, fully tracked and insured.

Delivery: a real-time tracking link lands in your inbox the moment your piece ships. Transit times vary by destination — your order will reach you safely.

Returns: not the right fit? You have 30 days to send it back for a full refund. Our care team handles every step — just message us and we'll take care of you.