Skip to content

O Size Rings

Browse our collection of O size rings here at Ramsdens Jewellery. You can make sure you're looking at the right range for you by using our printable ring size guide. And, if you're between sizes, you might be interested in our N size or P size rings.
18ct Yellow Gold 0.75ct Diamond Pear Shaped Cluster
15% OFF
Ramsdens18ct Yellow Gold 0.75ct Diamond Pear Shaped Cluster
Was: £1,099.00
Now: £935.00
Save £164.00 (15%)
From £17.96 / monthFinance options available
9ct White Gold 0.25ct Diamond Cluster Ring
Ramsdens9ct White Gold 0.25ct Diamond Cluster Ring
£399.00
Platinum 0.35ct Diamond Solitaire Ring
RamsdensPlatinum 0.35ct Diamond Solitaire Ring
£499.00
9ct White Gold 1.00ct Diamond Cluster Ring
Ramsdens9ct White Gold 1.00ct Diamond Cluster Ring
18ct White Gold 0.30ct Diamond Cluster Ring
Ramsdens18ct White Gold 0.30ct Diamond Cluster Ring
£399.00
9ct White Gold 0.32ct Diamond Cluster Ring
35% OFF
Ramsdens9ct White Gold 0.32ct Diamond Cluster Ring
Was: £429.00
Now: £279.00
Save £150.00 (35%)
9ct Yellow Gold Created Blue Topaz And Diamond Ring
Ramsdens9ct Yellow Gold Created Blue Topaz And Diamond Ring
£449.00
9ct White Gold Pink Gem Stone Set Ring
Ramsdens9ct White Gold Pink Gem Stone Set Ring
£379.00
9ct Yellow Gold Created Blue Topaz Ring
Ramsdens9ct Yellow Gold Created Blue Topaz Ring
£379.00
9ct White Gold Created Amethyst and Diamond Heart Dress Ring
Ramsdens9ct White Gold Created Amethyst and Diamond Heart Dress Ring
£389.00
9ct White Gold Created Topaz and Diamond Heart Ring
Ramsdens9ct White Gold Created Topaz and Diamond Heart Ring
£285.00
9ct Yellow Gold Triangular Created Amethyst Ring
Ramsdens9ct Yellow Gold Triangular Created Amethyst Ring
£379.00
14ct White Gold 0.50ct Diamond Eternity
35% OFF
Ramsdens14ct White Gold 0.50ct Diamond Eternity
Was: £579.00
Now: £375.00
Save £204.00 (35%)
9ct Yellow Gold 0.25ct Diamond Eternity Ring
Ramsdens9ct Yellow Gold 0.25ct Diamond Eternity Ring
£319.00
9ct Yellow Gold Topaz And 0.15ct Diamond Ring
Ramsdens9ct Yellow Gold Topaz And 0.15ct Diamond Ring
£259.00
9ct Yellow and White Gold 1.18ct Diamond Halo Cluster Ring by Anya Belle
Ramsdens9ct Yellow and White Gold 1.18ct Diamond Halo Cluster Ring by Anya Belle
18ct White Gold 1.00ct Diamond Fancy Ring
15% OFF
Ramsdens18ct White Gold 1.00ct Diamond Fancy Ring
Was: £1,299.00
Now: £1,105.00
Save £194.00 (15%)
From £17.82 / monthFinance options available
9ct White Gold 1.00ct Diamond Two Row Ring
35% OFF
Ramsdens9ct White Gold 1.00ct Diamond Two Row Ring
Was: £999.00
Now: £649.00
Save £350.00 (35%)
9ct White Gold 0.33ct Diamond Solitaire Ring
Ramsdens9ct White Gold 0.33ct Diamond Solitaire Ring
£369.00
14ct White Gold 1.00ct Diamond Cluster Ring
15% OFF
Ramsdens14ct White Gold 1.00ct Diamond Cluster Ring
Was: £1,499.00
Now: £1,275.00
Save £224.00 (15%)
From £17.84 / monthFinance options available
9ct White Gold 0.27ct Diamond Cluster Ring
Ramsdens9ct White Gold 0.27ct Diamond Cluster Ring
£419.00
9ct White Gold 0.50ct Diamond Solitaire Ring
35% OFF
Ramsdens9ct White Gold 0.50ct Diamond Solitaire Ring
Was: £899.00
Now: £585.00
Save £314.00 (35%)
18ct White Gold 0.50ct Diamond Solitaire Ring
35% OFF
Ramsdens18ct White Gold 0.50ct Diamond Solitaire Ring
Was: £849.00
Now: £549.00
Save £300.00 (35%)
9ct Yellow Gold Peridot Fancy Cluster Ring
Ramsdens9ct Yellow Gold Peridot Fancy Cluster Ring
£319.00
A UK ring size O has a circumference of 55.1mm, which means it's the equivalent to a US 7 and an EU 54 ⅝. It's a relatively common ring size, which means we typically have an extensive range of styles in this size. However, some of them are one-offs, so it's best to make a quick decision if there's a piece you love!

Because there are so many men's and women's rings in a size O to choose from, you should have no trouble finding a beautiful accessory to suit your needs. Whether you're planning to propose to your beloved and are shopping for an engagement ring in a size O, or you're looking to treat yourself to a size O diamond or gold ring, we'll have just the thing to fit the bill.

These aren't the only rings we stock, either. So, if you would like more options, make sure you check out our entire collection of luxury rings, as we often have pieces that can be resized to fit you perfectly.

Found a men's or women's ring in a size O that you love? Shop online today with free UK delivery. We also offer a 14-day returns period to give you complete peace of mind.