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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.
9 Carat White Gold 10pts Channel Set Half Eternity Ring
Ramsdens9 Carat White Gold 10pts Channel Set Half Eternity Ring
£405.00
RRP £689.00
9 Carat Yellow Gold 25pts Channel Set Diamond Half Eternity Ring
Ramsdens9 Carat Yellow Gold 25pts Channel Set Diamond Half Eternity Ring
£619.00
RRP £1,049.00
18 Carat Yellow Gold D-8pt Emerald-50pt 3 Stone Ring
Ramsdens18 Carat Yellow Gold D-8pt Emerald-50pt 3 Stone Ring
£779.00
RRP £1,325.00
18 Carat White Gold D-8pt Amethyst-40pt 3 Stone Ring
Ramsdens18 Carat White Gold D-8pt Amethyst-40pt 3 Stone Ring
£675.00
RRP £1,149.00
18 Carat White Gold D-8pt Aquamarine-31pt 3 Stone Ring
Ramsdens18 Carat White Gold D-8pt Aquamarine-31pt 3 Stone Ring
£689.00
RRP £1,175.00
18 Carat White Gold D-8pt Pink Sapphire-56pt 3 Stone Ring
Ramsdens18 Carat White Gold D-8pt Pink Sapphire-56pt 3 Stone Ring
£805.00
RRP £1,369.00
18 Carat White Gold D-8pt Tanzanite-39pt 3 Stone Ring
Ramsdens18 Carat White Gold D-8pt Tanzanite-39pt 3 Stone Ring
£705.00
RRP £1,195.00
18 Carat White Gold 9pts Diamond & Pearl Ring
Ramsdens18 Carat White Gold 9pts Diamond & Pearl Ring
£569.00
RRP £946.00
18 Carat White Gold Diamond-13pt Multi Colour Sapphire 1.33ct Ring
Ramsdens18 Carat White Gold Diamond-13pt Multi Colour Sapphire 1.33ct Ring
18 Carat Yellow Gold 1.25ct Channel Set Diamond Half Eternity Ring
Ramsdens18 Carat Yellow Gold 1.25ct Channel Set Diamond Half Eternity Ring
18 Carat White Gold 1.25ct Channel Set Diamond Half Eternity Ring
Ramsdens18 Carat White Gold 1.25ct Channel Set Diamond Half Eternity Ring
18 Carat White Gold Diamond-18pts Sapphire 36pts Chan Set Half Eternity Ring
Ramsdens18 Carat White Gold Diamond-18pts Sapphire 36pts Chan Set Half Eternity Ring
18 Carat White Gold Diamond-18pts Ruby-36pts Chan Set Half Eternity Ring
Ramsdens18 Carat White Gold Diamond-18pts Ruby-36pts Chan Set Half Eternity Ring
18 Carat White Gold Diamond-18pts Emerald-30pts Chan Set Half Eternity Ring
Ramsdens18 Carat White Gold Diamond-18pts Emerald-30pts Chan Set Half Eternity Ring
18 Carat White Gold D-8pt Sapphire-58pt 3 Stone Ring
Ramsdens18 Carat White Gold D-8pt Sapphire-58pt 3 Stone Ring
£809.00
RRP £1,379.00
18 Carat White Gold D-8pt Ruby-70pt 3 Stone Ring
Ramsdens18 Carat White Gold D-8pt Ruby-70pt 3 Stone Ring
£745.00
RRP £1,265.00
18 Carat White Gold D-8pt Emerald-50pt 3 Stone Ring
Ramsdens18 Carat White Gold D-8pt Emerald-50pt 3 Stone Ring
£779.00
RRP £1,325.00
18 Carat White Gold 50pts 7 Stone Cluster Diamond Ring
Ramsdens18 Carat White Gold 50pts 7 Stone Cluster Diamond Ring
18ct White Gold 1.00ct Diamond Cluster Ring
Ramsdens18ct White Gold 1.00ct Diamond Cluster Ring
18 Carat White Gold 25cts 5 Stone Diamond Ring
Ramsdens18 Carat White Gold 25cts 5 Stone Diamond Ring
18 Carat White Gold 50pts 5 Stone Diamond Ring
Ramsdens18 Carat White Gold 50pts 5 Stone Diamond Ring
18 Carat White Gold 1.00ct 5 Stone Diamond Ring
Ramsdens18 Carat White Gold 1.00ct 5 Stone Diamond Ring
18 Carat Yellow Gold 3 Stone Diamond-48pt Sapphire -1.50ct Ring
Ramsdens18 Carat Yellow Gold 3 Stone Diamond-48pt Sapphire -1.50ct Ring
18 Carat Yellow Gold 3 Stone Diamond-48pt Ruby-1.70ct Ring
Ramsdens18 Carat Yellow Gold 3 Stone Diamond-48pt Ruby-1.70ct Ring
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.