How to Choose a Wedding Band: Metal, Width and Fit

Choose a wedding band in this order: the metal you can live with for decades, the width and profile that suit your hand, and then a size taken when your finger is at its normal temperature. Get those three right and the band will wear well whatever the style. Diamonds, engraving and finish come after that, and they matter less than most people expect.

A wedding band gets more wear than almost any other piece of jewellery. It goes on every day, it rarely comes off, and it rubs against desks, steering wheels, weights and dishwater. So this guide starts with materials and works towards looks.

Start with the metal, because it decides everything else

The metal sets how the band ages, how much upkeep it needs, and whether it can be resized later. Here is how the usual choices compare for a ring that is worn every day.

What karat actually means

Gold karat is a fraction out of 24. GIA's buying guide for white, yellow and rose gold puts it plainly: "14K gold is 58.3 percent gold or 14 parts gold and 10 parts alloying metal or metals, so it might be stamped 583 (or 585) or 14K." An 18K ring, by the same guide, "might be stamped 750 or 18K depending on regulations."

More gold is not automatically better for a band. GIA's article on the best ring material for everyday wear (2025) notes that "higher karat gold, such as 24k, is the purest and softest, making it more prone to scratches and dents." 18K is not 24K, but the direction is the same: the higher the karat, the softer the band. If you work with your hands, 14K is usually the better buy. 18K is worth it when you love the deeper yellow, or when you want it to match an 18K engagement ring so the two wear at the same rate.

White gold and the rhodium question

White gold is not naturally bright white. GIA explains it is "made by alloying pure gold with white metals such as nickel, palladium and zinc," and that it "is usually plated with rhodium for a whiter look, a better shine and to protect against scratching. Because the rhodium can wear away over time, be sure to ask your jeweler if they will replate the ring when needed." On a wedding band the inside and the palm side wear first, so plan on re-plating every so often. That is maintenance, not a defect.

If you have reacted to cheap jewellery before, take that seriously. The same GIA guide advises: "Avoid if allergic to copper or nickel (a common allergen); if you are allergic to one of these metals, consider platinum as an alternative." Yellow gold and palladium-based white gold are other options to ask about.

Platinum: when it is worth the money

Platinum's advantage is that it moves rather than wears away. GIA's everyday-wear article says "platinum will not lose shape or abrade over decades of wear like other metals will," and that "over time, platinum develops a patina." It will look scuffed and soft-grey within months. Some people love that look, and you can have it polished back. If you want a band that stays mirror-bright with no effort, platinum will disappoint you.

Platinum and gold prices both move a lot, so check current quotes on the day rather than trusting any rule of thumb about which costs more. For a plain band, platinum makes the most sense when it matches a platinum engagement ring or when you have a confirmed metal allergy. Otherwise 14K gold does the job for less.

Tungsten and titanium

These are cheap and very hard to scratch, and for some people that settles it. The catch is sizing. GIA states that "tungsten rings cannot be resized," and that resizing titanium "can be challenging." Fingers change over a marriage. If you choose one of these, accept that a size change may mean buying a new band.

Pick a width and profile for your hand

Width is measured in millimetres across the top of the band. Most bands fall somewhere between about 2 mm and 8 mm. As a rough jeweller's guide:

• 2 to 3 mm looks delicate, sits neatly beside an engagement ring and suits slim fingers.
• 4 to 5 mm is the middle ground and the most common choice for a band worn on its own.
• 6 to 8 mm reads as bold and suits larger hands, but it feels tighter at the same size because it covers more of the finger.

That last point catches people out. A wide band covers more skin and sits over the knuckle area, so many wearers need a quarter or half size up compared with a thin band. Try the actual width before you settle on a size.

Profile is the shape of the band in cross-section. A flat band looks modern and shows scratches more easily on its broad face. A domed or half-round band hides wear well and is the traditional choice. A comfort fit band is rounded on the inside as well, so it slides over the knuckle more easily. It uses a bit more metal and costs a little more. For bands 5 mm and wider, comfort fit is usually worth it. On a 2 mm band you will hardly notice the difference.

Decide whether you want stones

Plain bands are the easiest to live with. There are no settings to check, and they can be resized, polished and re-plated without anything to work around.

Diamond bands (channel, pavé or bezel-set) add sparkle, but every stone is held by metal that wears. A band set all the way round, sometimes called a full eternity band, is difficult or impossible to resize because there is no plain section to cut. Half-way bands keep the diamonds on top and leave plain metal underneath for sizing. If you want diamonds and expect your finger size might change, go half-way.

If the band will sit beside an engagement ring, check that the two meet cleanly. Some engagement settings sit low and leave a gap, and others need a curved or notched band. We cover that in detail in our guide to wedding band and engagement ring pairing.

Check the stamps: what Canadian marking law says

Inside the band you should find a quality mark such as 14K, 585 or PLAT. In Canada these marks are governed by the Precious Metals Marking Act and its regulations, and they are a useful check on what you are buying.

1. The mark has to be true. The Competition Bureau's Guide to the Precious Metals Marking Act and Regulations states that a quality mark may be applied "if the precious metal content meets the standards provided in the Regulations."
2. It must come with a trademark. The same guide says that where a quality mark is applied, the article "must also bear a trade‑mark that has either been applied for or registered with the Registrar of Trade‑marks in Canada." A band stamped 14K with no maker's mark next to it is worth asking about.
3. Gold karat marks start at 9K. Per the guide, karat terms may be used for gold "having a minimum quality of 9 K or higher."
4. There is a small, defined tolerance. Section 13 of the Precious Metals Marking Regulations allows gold to fall short of its mark by no more than seven parts per thousand where solder is used and three parts per thousand where it is not, with a wider allowance for white gold of 18K and above that uses solder.
5. Platinum has to be at least 95 percent. The Competition Bureau guide says "platinum" marks apply to an article containing "at least 95 percent platinum" or, for an alloy, "at least 95 percent of platinum and iridium or ruthenium."

"Gold filled" and plated items are something else entirely: a base metal with a layer of gold on top. They are fine for fashion pieces but not for a ring you plan to wear for fifty years.

Get the size right

Size a wedding band at the end of the day, at room temperature, and not just after exercise or a hot shower. Fingers swell in heat and shrink in cold, so a band sized on a winter morning in Winnipeg can feel tight in July. If your knuckle is noticeably larger than the base of your finger, size for the knuckle and use a comfort-fit profile so it goes on easily. Measure more than once, on different days, before you order.

Where spending more is, and is not, worth it

Spend more on:

• Matching metal to your engagement ring, so the two wear evenly against each other.
• Comfort fit on wider bands.
• A sensible weight. A band that is too thin wears through faster at the palm.

Do not spend more on:

• 18K or platinum by default. For a plain band, 14K gold holds up as well as anything for most people.
• Very high diamond grades in a band. The stones are small and seen from a distance, so top colour and clarity grades rarely show to the naked eye.
• Hand-engraved patterns if you work with your hands. Fine detail wears down and is hard to restore.

What to do next

Decide your metal first, then try two or three widths on your finger, preferably in the profile you want. Write down the size you settle on and the stamp you expect to see inside. When you are ready, browse our wedding bands with those three things in mind. If you are still choosing the engagement ring the band will sit beside, start with our engagement ring settings so the two can be planned together.

Sources

• Competition Bureau Canada. Guide to the Precious Metals Marking Act and Regulations. 2006, updated through 2025. competition-bureau.canada.ca
• Government of Canada, Justice Laws Website. Precious Metals Marking Regulations (C.R.C., c. 1303). laws-lois.justice.gc.ca
• Gemological Institute of America (GIA). Buying Guide for White, Yellow and Rose Gold Engagement Rings. 2018. 4cs.gia.edu
• Gemological Institute of America (GIA). The Best Ring Material for Everyday Wear. 2025. 4cs.gia.edu