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Built for a lifetime.

Tungsten carbide is the hardest ring material we stock. Here's why it doesn't scratch, bend, or tarnish.

9MOHS

Scratch-proof hardness

Sits just below sapphire on the Mohs scale. 4× harder than titanium, 10× harder than 18k gold — the ring looks identical on day 10,000 as day one.

2x

Heavier than gold

Pressed from tungsten carbide powder at 2,000°C, precision-CNC'd. Real weighted feel — nothing hollow, no plating to wear through.

∞

Lifetime warranty

If the metal ever cracks, chips, or fades — we replace it. One-time size swap free in the first 60 days.

In the box

  • Jewellery boxBranded presentation box — gift-ready out of the parcel.
  • Free ring sizerPlastic finger-sizer included, so you nail the fit first time.
  • Lifetime warrantyCracks, chips, fades — we replace it. For as long as you wear it.
  • Free exchange*Free swap on rings over $99 ($10 fee under $99). Tracked Australia Post on dispatch.

Dispatch

Dispatched from Brisbane — tracked Australia Post.

The details.

If you want a ring that looks the same in ten years as it does today, tungsten carbide is hard to beat. The scratch resistance is exceptional — general daily wear, keys in the pocket, knocks on the workbench. This one comes in a 7mm width — It has a satisfying solid weight without being uncomfortably heavy. The polished surface keeps its shine without replating. Note that tungsten can't be resized, so get your measurement right. Good for blokes who want something tough and permanent.

Browse Related Rings: Mens Wedding Rings, Tungsten Rings.

Not sure of your size?

Tungsten can't be resized — but in a true emergency it can be safely cut off. Best to nail the fit the first time.

Option 1 Free sizer post-out Order a free plastic sizer kit — we post it anywhere in AU. Option 2 Printable chart AU / US / mm chart — 30-second ring match at home. Option 3 Ask our team Not sure between two sizes? Message us — we'll help you pick.

What 11 owners actually say.

Average 5.0 / 5 across 11 verified reviews.

Customer Reviews

Twin Groove 7mm Tungsten Ring
Rick M.
Rating: 5/5
Exceptional
I originally purchased this ring for my partner a few years ago. He accidentally knocked it off the bathroom vanity & it shattered. MRO helped me find the original order, style & size & it was shipped out in under a week. Thanks so much for all the help. The customer service is beyond amazing. Thank goodness for the Lifetime Warranty. My partner is so very happy
Sat Jul 08 2023 17:00:00 GMT+0000 (Coordinated Universal Time)
Twin Groove 7mm Tungsten Ring
Jennifer C.
Rating: 5/5
Amazing
I got this ring for my fiancé as a anniversary present and he absolutely loves it. It fits him perfectly and hasn’t taken it off since.
Sun Oct 03 2021 17:00:00 GMT+0000 (Coordinated Universal Time)
Twin Groove 7mm Tungsten Ring
Bradley B.
Rating: 5/5
Great service, received in record
Great service, received in record time product and size was everything expected. Highly recommended
Fri Nov 20 2020 17:00:00 GMT+0000 (Coordinated Universal Time)
Twin Groove 7mm Tungsten Ring
Rick M.
Rating: 5/5
Awesome
This is my second purchase from MRO. Can’t be happier with the service.
Sat Apr 25 2020 17:00:00 GMT+0000 (Coordinated Universal Time)
Twin Groove 7mm Tungsten Ring
Brooke S.
Rating: 5/5
Perfect
Excellent quality, shipping was incredibly fast especially considering the time of year purchased.
Thu Dec 26 2019 17:00:00 GMT+0000 (Coordinated Universal Time)
Twin Groove 7mm Tungsten Ring
Nicole T.
Rating: 5/5
We love it!
We ordered this mid last week and recieved it today. We were unsure on size to order as told 3 different sizes by local jewellers but we went with our gut and ordered the biggest of the 3 sizes told to purchase. We absolutely love it, goes beautifully with mine the service was fast and we felt safe purchasing from this site as we read so many awesome reviews. Thank you everyone it's so perfect and has that weight to it. :blush:
Sun Jan 13 2019 17:00:00 GMT+0000 (Coordinated Universal Time)
Twin Groove 7mm Tungsten Ring
Jessica H.
Rating: 5/5
Twin Groove Tungsten Ring
Very impressed so far. I couldn't believe how quickly it was delivered. I ordered on Monday and it was here Wednesday afternoon. Great service & love supporting an Aussie business too.
Sun Aug 19 2018 17:00:00 GMT+0000 (Coordinated Universal Time)
Twin Groove 7mm Tungsten Ring
Stephanie W.
Rating: 5/5
Love the ring
My partner loves his twin groove ring and the service was amazing
Fri May 11 2018 17:00:00 GMT+0000 (Coordinated Universal Time)
Twin Groove 7mm Tungsten Ring
Anndrette T.
Rating: 5/5
Good service
Good service
Fri Apr 20 2018 17:00:00 GMT+0000 (Coordinated Universal Time)
Twin Groove 7mm Tungsten Ring
Wendy T
Rating: 5/5
Beautiful ring Exactly as pictured
Beautiful ring! Exactly as pictured and described but honestly, it is so much more beautiful in person. Bought this as an anniversary gift and will definitely be back to purchase our wedding bands. Thank-you so much for the service and the exceptionally fast delivery. I needed it urgently so paid for express and you delivered as promised. Thanks again. I'll be back!
Thu Jul 30 2015 17:00:00 GMT+0000 (Coordinated Universal Time)