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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 Yellow Gold Heart Signet Ring
Ramsdens9ct Yellow Gold Heart Signet Ring
£205.00
9ct Yellow Gold 1.00ct Brilliant Cut Diamond Cluster Ring
Ramsdens9ct Yellow Gold 1.00ct Brilliant Cut Diamond Cluster Ring
9ct White Gold 1.00ct Brilliant And Baguette Cut Diamond Cluster Ring
Ramsdens9ct White Gold 1.00ct Brilliant And Baguette Cut Diamond Cluster Ring
9ct Yellow Gold Cubic Zirconia Full Eternity Ring
Ramsdens9ct Yellow Gold Cubic Zirconia Full Eternity Ring
£159.00
14ct Yellow Gold Monaco Classic Flex Patterned Signet Ring
Ramsdens14ct Yellow Gold Monaco Classic Flex Patterned Signet Ring
£309.00
9ct White Gold Brilliant Cut 1.00ct Diamond Cluster Ring
Ramsdens9ct White Gold Brilliant Cut 1.00ct Diamond Cluster Ring
9ct White Gold Brilliant Cut 0.70ct Diamond Solitaire Ring
Ramsdens9ct White Gold Brilliant Cut 0.70ct Diamond Solitaire Ring
18ct White Gold 0.75ct Brilliant Cut Diamond Cluster Ring
Ramsdens18ct White Gold 0.75ct Brilliant Cut Diamond Cluster Ring
£749.00
18ct White Gold 1.00ct Brilliant Cut Diamond Solitaire Ring
Ramsdens18ct White Gold 1.00ct Brilliant Cut Diamond Solitaire Ring
9ct Yellow Gold 1.00ct Brilliant Cut Diamond Cluster Ring
Ramsdens9ct Yellow Gold 1.00ct Brilliant Cut Diamond Cluster Ring
Platinum 0.91ct Brilliant Cut Diamond Solitaire Ring
RamsdensPlatinum 0.91ct Brilliant Cut Diamond Solitaire Ring
9ct Yellow Gold 0.50ct Brilliant Cut Diamond Half Eternity Ring
Ramsdens9ct Yellow Gold 0.50ct Brilliant Cut Diamond Half Eternity Ring
£529.00
9ct Yellow Gold Smoky Quartz Single Stone Ring
Ramsdens9ct Yellow Gold Smoky Quartz Single Stone Ring
£289.00
18ct White Gold 0.40ct Diamond Solitaire Ring
Ramsdens18ct White Gold 0.40ct Diamond Solitaire Ring
£779.00
9ct White Gold 0.25ct Brilliant Cut Diamond Two Stone Ring
Ramsdens9ct White Gold 0.25ct Brilliant Cut Diamond Two Stone Ring
£419.00
18ct White Gold 3.03ct Brilliant Cut Diamond Solitaire Ring
Ramsdens18ct White Gold 3.03ct Brilliant Cut Diamond Solitaire Ring
£44,999.00
14ct Yellow Gold Cubic Zirconia Half Eternity Ring
Ramsdens14ct Yellow Gold Cubic Zirconia Half Eternity Ring
£199.00
9ct Yellow Gold Blue Topaz And Cubic Zirconia Cluster Ring
Ramsdens9ct Yellow Gold Blue Topaz And Cubic Zirconia Cluster Ring
Was: £439.00
Now: £375.00
Save £64.00 (15%)
9ct White Gold 0.33ct Brilliant Cut Diamond Cluster Ring
Ramsdens9ct White Gold 0.33ct Brilliant Cut Diamond Cluster Ring
£479.00
18ct Yellow Gold 1.00ct Brilliant Cut Diamond Solitaire Ring
Ramsdens18ct Yellow Gold 1.00ct Brilliant Cut Diamond Solitaire Ring
14ct Yellow Gold 1.25ct Brilliant Cut Diamond Half Eternity Ring
Ramsdens14ct Yellow Gold 1.25ct Brilliant Cut Diamond Half Eternity Ring
9ct Yellow Gold Sapphire and Cubic Zirconia Cluster Ring
Ramsdens9ct Yellow Gold Sapphire and Cubic Zirconia Cluster Ring
£269.00
9ct White Gold 0.25ct Diamond Solitaire Ring
Ramsdens9ct White Gold 0.25ct Diamond Solitaire Ring
£389.00
9ct Yellow Gold Garnet and Diamond Dress Ring
Ramsdens9ct Yellow Gold Garnet and Diamond Dress Ring
£299.00
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.