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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 Cubic Zirconia Cluster Ring
Ramsdens9ct White Gold Cubic Zirconia Cluster Ring
£169.00
9ct Yellow Gold Blue Topaz Single Stone Ring
Ramsdens9ct Yellow Gold Blue Topaz Single Stone Ring
£339.00
9ct Yellow Gold 0.05ct Diamond Trilogy Ring
Ramsdens9ct Yellow Gold 0.05ct Diamond Trilogy Ring
£129.00
18ct White Gold 0.20ct Diamond Wedding Band 4.3mm
Ramsdens18ct White Gold 0.20ct Diamond Wedding Band 4.3mm
£539.00
9ct Yellow Gold 0.10ct Diamond And Sapphire Ring
Ramsdens9ct Yellow Gold 0.10ct Diamond And Sapphire Ring
£169.00
9ct Yellow Gold Blue Topaz Single Stone Ring
Ramsdens9ct Yellow Gold Blue Topaz Single Stone Ring
£199.00
14ct Yellow Gold Cubic Zirconia Three Stone Ring
Ramsdens14ct Yellow Gold Cubic Zirconia Three Stone Ring
£189.00
9ct Yellow Gold Chalcedony And Cubic Zirconia Cluster Ring
Ramsdens9ct Yellow Gold Chalcedony And Cubic Zirconia Cluster Ring
£169.00
9ct Yellow Gold Sapphire And Cubic Zirconia Cluster Ring
Ramsdens9ct Yellow Gold Sapphire And Cubic Zirconia Cluster Ring
£199.00
9ct Yellow Gold Ruby And Cubic Zirconia Floral Cluster Ring
Ramsdens9ct Yellow Gold Ruby And Cubic Zirconia Floral Cluster Ring
£199.00
9ct White Gold 0.20ct Brilliant Cut Diamond Cluster Ring
Ramsdens9ct White Gold 0.20ct Brilliant Cut Diamond Cluster Ring
£269.00
9ct Yellow Gold 0.20ct Brilliant Cut Diamond Fancy Ring
Ramsdens9ct Yellow Gold 0.20ct Brilliant Cut Diamond Fancy Ring
£269.00
9ct White Gold 0.33ct Brilliant Cut Diamond Cluster Ring
Ramsdens9ct White Gold 0.33ct Brilliant Cut Diamond Cluster Ring
£429.00
18ct Yellow Gold 0.35ct Brilliant Cut Diamond Trilogy Ring
Ramsdens18ct Yellow Gold 0.35ct Brilliant Cut Diamond Trilogy Ring
£549.00
9ct Yellow Gold 0.75ct Brilliant Cut Black And Colourless Diamond Cluster Ring
Ramsdens9ct Yellow Gold 0.75ct Brilliant Cut Black And Colourless Diamond Cluster Ring
£549.00
9ct White Gold 0.35ct Brilliant Cut Diamond Half Eternity Ring
Ramsdens9ct White Gold 0.35ct Brilliant Cut Diamond Half Eternity Ring
£429.00
18ct Yellow Gold 1.00ct Brilliant Cut Diamond Half Eternity Ring
Ramsdens18ct Yellow Gold 1.00ct Brilliant Cut Diamond Half Eternity Ring
18ct Yellow Gold 0.35ct Brilliant Cut Diamond Half Eternity Ring
Ramsdens18ct Yellow Gold 0.35ct Brilliant Cut Diamond Half Eternity Ring
£579.00
9ct White Gold 0.25ct Brilliant Cut Diamond Trilogy Ring
Ramsdens9ct White Gold 0.25ct Brilliant Cut Diamond Trilogy Ring
£389.00
9ct White Gold 1.00ct Brilliant And Baguette Cut Diamond Cluster Ring
Ramsdens9ct White Gold 1.00ct Brilliant And Baguette Cut Diamond Cluster Ring
18ct Yellow Gold 1.25ct Brilliant Cut Diamond Full Eternity Ring
Ramsdens18ct Yellow Gold 1.25ct Brilliant Cut Diamond Full Eternity Ring
18ct Yellow Gold 0.30ct Brilliant Cut Diamond Trilogy Ring
Ramsdens18ct Yellow Gold 0.30ct Brilliant Cut Diamond Trilogy Ring
£419.00
9ct White Gold 0.45ct Brilliant Cut Diamond Cluster Ring
Ramsdens9ct White Gold 0.45ct Brilliant Cut Diamond Cluster Ring
£549.00
9ct Yellow Gold 0.33ct Brilliant Cut Diamond Five Stone Ring
Ramsdens9ct Yellow Gold 0.33ct Brilliant Cut Diamond Five Stone Ring
£429.00
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.