The details.

This tungsten carbide men's ring pairs a durable tungsten carbide base with a koa wood inlay. The koa wood inlay adds natural texture and warmth without taking focus away from the tungsten carbide base. Scratch-resistant and easy to wear day after day, it gives you a bolder look without losing the practicality tungsten is known for.

What 12 owners actually say.

Average 4.8 / 5 across 12 verified reviews.

Michele W.★★★★★

My fiancé didn’t want a traditional wedding ring so we were on the hunt for something more personalised for him. We found this! Love the koa wood inside and carbon fibre on the outside, it’s made so well and his size was perfect! The customer service was incredible as well. When I emailed them to follow up my receipt after payment they couldn’t have been any more prompt. Highly recommend this website. Thank you Mens Rings Online.

Oct 30
Jeff B.★★★★★

Thanks MRO, easy process and the ring is awesome.

Oct 14
Emily B.★★★★★

I bought an initial item that was too large so requested an exchange. This was processed on the same day and the replacement product is absolutely perfect! Thanks so much!

Dec 4
Raelene T.★★★★

The ring is very light and comfortable

Nov 10
Gavin D.★★★★

Awesome ring for motoring enthusiast

Aug 28
Nicolas S.★★★★★

Love the design, the ring feels and looks extremely high quality. Looks like a big chunky blokes ring but is lighter than my wife's tiny little gold band! Fast postage, great experience thanks

Aug 4

Caring for your Carbon Fibre ring

Carbon fibre rings are layered woven carbon set into a resin matrix, often inlaid into a titanium, tungsten or ceramic outer sleeve. The carbon itself is inert — it won't tarnish, rust or react with skin, chlorine or saltwater. Clean with warm soapy water and a soft cloth; skip ultrasonic cleaners and harsh solvents like acetone, which can dull the resin over time.

Carbon is light and tough but the resin layer can chip on a sharp impact, so take the ring off for heavy lifting and contact sports. Most carbon rings cannot be resized — the weave runs continuously around the band — so getting sized right at order time is important. Stored in a soft pouch away from direct sunlight, the deep black pattern stays sharp for decades.

Common questions about Carbon Fibre rings

Are carbon fibre rings durable enough for daily wear?

Yes for office and light-trade wear — carbon fibre composites are stronger than titanium by weight and won't corrode. They can chip on a sharp impact (drops onto tile, hammer strikes), so heavy tradies often prefer tungsten or titanium for full-time site work.

Will a carbon ring fade or change colour?

No — the weave pattern is set into UV-stable resin and the colour is the carbon itself, not a coating. Avoid leaving it on a sunny car dash for weeks at a time, but normal NZ outdoor wear won't fade it.

Can a carbon fibre ring be resized?

Most cannot — the woven layers run continuously and can't be cut and re-joined like metal. Order your exact size; if you're between sizes, go up by a half. NZ jewellers will size your finger for free.

Is carbon fibre hypoallergenic?

Yes — pure carbon and cured epoxy resin are both biologically inert, with no nickel, copper or other common allergens. If the ring has a metal sleeve (titanium or tungsten), check that's hypoallergenic too — both of those are.

Considering alternatives?

Carbon often pairs with — or competes against — titanium rings, which give a similar modern, lightweight feel with a metallic finish instead of a woven black look. Titanium is easier to resize and slightly more impact-tolerant; carbon wins on distinctive pattern.