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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.
18ct White Gold 1.50ct 5 Stone Diamond Ring
Ramsdens18ct White Gold 1.50ct 5 Stone Diamond Ring
9ct Yellow Gold 0.34ct Invisible Set Diamond Trilogy Ring
Ramsdens9ct Yellow Gold 0.34ct Invisible Set Diamond Trilogy Ring
9ct Yellow Gold 0.33ct Diamond Cluster Ring
Ramsdens9ct Yellow Gold 0.33ct Diamond Cluster Ring
£835.00
RRP £1,325.00
9ct Yellow Gold 0.25ct 7 Stone Diamond Half Eternity Ring
Ramsdens9ct Yellow Gold 0.25ct 7 Stone Diamond Half Eternity Ring
£635.00
RRP £999.00
9ct Yellow Gold 0.15ct Diamond & Ruby Half Eternity Ring
Ramsdens9ct Yellow Gold 0.15ct Diamond & Ruby Half Eternity Ring
£609.00
RRP £935.00
9ctYellow Gold Diamond 0.15ct & Sapphire Half Eternity Ring
Ramsdens9ctYellow Gold Diamond 0.15ct & Sapphire Half Eternity Ring
£609.00
RRP £935.00
9ct Yellow Gold 0.10ct Diamond Channel Set Half Eternity Ring
Ramsdens9ct Yellow Gold 0.10ct Diamond Channel Set Half Eternity Ring
£445.00
RRP £689.00
9ct White Gold 0.10ct Channel Set Half Eternity Ring
Ramsdens9ct White Gold 0.10ct Channel Set Half Eternity Ring
£445.00
RRP £689.00
9ctYellow Gold 0.25ct Channel Set Diamond Half Eternity Ring
Ramsdens9ctYellow Gold 0.25ct Channel Set Diamond Half Eternity Ring
£669.00
RRP £1,049.00
18ct Yellow Gold D 0.08ct Emerald 0.50ct 3 Stone Ring
Ramsdens18ct Yellow Gold D 0.08ct Emerald 0.50ct 3 Stone Ring
£779.00
RRP £1,325.00
18ct White Gold D 0.08ct Amethyst 0.40ct 3 Stone Ring
Ramsdens18ct White Gold D 0.08ct Amethyst 0.40ct 3 Stone Ring
£675.00
RRP £1,149.00
18ct White Gold D 0.08ct Aquamarine 0.31ct 3 Stone Ring
Ramsdens18ct White Gold D 0.08ct Aquamarine 0.31ct 3 Stone Ring
£689.00
RRP £1,175.00
18ct White Gold D 0.08ct Pink Sapphire 0.56ct 3 Stone Ring
Ramsdens18ct White Gold D 0.08ct Pink Sapphire 0.56ct 3 Stone Ring
£805.00
RRP £1,369.00
18ct White Gold D 0.08ct Tanzanite-0.39ct 3 Stone Ring
Ramsdens18ct White Gold D 0.08ct Tanzanite-0.39ct 3 Stone Ring
£705.00
RRP £1,195.00
18ct White Gold 0.09ct Diamond & Pearl Ring
Ramsdens18ct White Gold 0.09ct Diamond & Pearl Ring
£759.00
RRP £946.00
18ct White Gold Diamond 0.13ct Multi Colour Sapphire 1.33ct Ring
Ramsdens18ct White Gold Diamond 0.13ct Multi Colour Sapphire 1.33ct Ring
18ct Yellow Gold 1.25ct Channel Set Diamond Half Eternity Ring
Ramsdens18ct Yellow Gold 1.25ct Channel Set Diamond Half Eternity Ring
18ct White Gold 1.25ct Channel Set Diamond Half Eternity Ring
Ramsdens18ct White Gold 1.25ct Channel Set Diamond Half Eternity Ring
18ct White Gold Diamond 0.18ct Sapphire 0.36ct Chan Set Half Eternity Ring
Ramsdens18ct White Gold Diamond 0.18ct Sapphire 0.36ct Chan Set Half Eternity Ring
18ct White Gold Diamond 0.18ct Ruby 0.36ct Chan Set Half Eternity Ring
Ramsdens18ct White Gold Diamond 0.18ct Ruby 0.36ct Chan Set Half Eternity Ring
18ct White Gold Diamond 0.18ct Emerald 0.30ct Chan Set Half Eternity Ring
Ramsdens18ct White Gold Diamond 0.18ct Emerald 0.30ct Chan Set Half Eternity Ring
18ct White Gold D 0.08ct Sapphire-0.58ct 3 Stone Ring
Ramsdens18ct White Gold D 0.08ct Sapphire-0.58ct 3 Stone Ring
£809.00
RRP £1,379.00
18ct White Gold D 0.08ct Ruby 0.70ct 3 Stone Ring
Ramsdens18ct White Gold D 0.08ct Ruby 0.70ct 3 Stone Ring
£745.00
RRP £1,265.00
18ct White Gold D 0.08ct Emerald 0.50ct 3 Stone Ring
Ramsdens18ct White Gold D 0.08ct Emerald 0.50ct 3 Stone Ring
£779.00
RRP £1,325.00
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.