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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.
9ct White Gold 0.70ct Diamond Half Eternity Ring
Ramsdens9ct White Gold 0.70ct Diamond Half Eternity Ring
9ct Yellow Gold 0.70ct Diamond Half Eternity Ring
Ramsdens9ct Yellow Gold 0.70ct Diamond Half Eternity Ring
9ct White Gold 0.75ct Diamond Half Eternity Ring
Ramsdens9ct White Gold 0.75ct Diamond Half Eternity Ring
9ct Yellow Gold 0.80ct Diamond Half Eternity Ring
Ramsdens9ct Yellow Gold 0.80ct Diamond Half Eternity Ring
9ct White Gold 0.33ct Diamond Half Eternity Ring
15% OFF
Ramsdens9ct White Gold 0.33ct Diamond Half Eternity Ring
Was: £429.00
Now: £365.00
Save £64.00 (15%)
18ct White Gold 0.25ct Diamond Solitaire Ring
Ramsdens18ct White Gold 0.25ct Diamond Solitaire Ring
£389.00
9ct Yellow Gold Single Stone Red Gemstone Ring
Ramsdens9ct Yellow Gold Single Stone Red Gemstone Ring
£129.00
9ct White Gold Three Stone Cubic Zirconia Ring
Ramsdens9ct White Gold Three Stone Cubic Zirconia Ring
£169.00
9ct Yellow Gold Ruby and 0.06ct Diamond Cluster Ring
Ramsdens9ct Yellow Gold Ruby and 0.06ct Diamond Cluster Ring
£325.00
9ct Yellow Gold Created Opal Stone Set Ring
Ramsdens9ct Yellow Gold Created Opal Stone Set Ring
£319.00
9ct Yellow Gold Created Opal Stone Set Ring
Ramsdens9ct Yellow Gold Created Opal Stone Set Ring
£239.00
9ct Yellow and White Gold Entwinned Circles Ring
Ramsdens9ct Yellow and White Gold Entwinned Circles Ring
£239.00
9ct Yellow Gold Created Opal Single Stone Ring
Ramsdens9ct Yellow Gold Created Opal Single Stone Ring
£305.00
9ct Yellow Gold Three Stone Cubic Zirconia Ring
Ramsdens9ct Yellow Gold Three Stone Cubic Zirconia Ring
£239.00
9ct Yellow Gold Created Opal And Cubic Zirconia Cluster Ring
Ramsdens9ct Yellow Gold Created Opal And Cubic Zirconia Cluster Ring
£205.00
9ct Yellow Gold Created Opal Single Stone Ring
Ramsdens9ct Yellow Gold Created Opal Single Stone Ring
£155.00
9ct White Gold 0.06ct Diamond And Emerald Ring
12% OFF
Ramsdens9ct White Gold 0.06ct Diamond And Emerald Ring
Was: £599.00
Now: £525.00
Save £74.00 (12%)
9ct Yellow, White And Rose Gold Loop Flower Ring
Ramsdens9ct Yellow, White And Rose Gold Loop Flower Ring
£215.00
9ct Yellow Gold Heart Ring
Ramsdens9ct Yellow Gold Heart Ring
£215.00
9ct Yellow Gold Cubic Zirconia Daisy Ring
Ramsdens9ct Yellow Gold Cubic Zirconia Daisy Ring
£175.00
9ct Yellow Gold Cubic Zirconia Vine Twist Ring
Ramsdens9ct Yellow Gold Cubic Zirconia Vine Twist Ring
£175.00
9ct Yellow Gold Created Opal And Cubic Zirconia Cluster Ring
Ramsdens9ct Yellow Gold Created Opal And Cubic Zirconia Cluster Ring
£329.00
9ct Yellow Gold Created Opal And Cubic Zirconia Cluster Ring
Ramsdens9ct Yellow Gold Created Opal And Cubic Zirconia Cluster Ring
£315.00
9ct Yellow Gold Sapphire And 0.05ct Diamond Cluster Ring
20% OFF
Ramsdens9ct Yellow Gold Sapphire And 0.05ct Diamond Cluster Ring
Was: £485.00
Now: £389.00
Save £96.00 (20%)
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.