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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 Amethyst Single Stone Ring
Ramsdens9ct Yellow Gold Amethyst Single Stone Ring
£189.00
9ct White Gold Cubic Zirconia Cluster Ring
Ramsdens9ct White Gold Cubic Zirconia Cluster Ring
£319.00
9ct Yellow Gold Cubic Zirconia Halo Ring
Ramsdens9ct Yellow Gold Cubic Zirconia Halo Ring
£205.00
9ct Yellow Gold Cubic Zirconia Halo Ring
Ramsdens9ct Yellow Gold Cubic Zirconia Halo Ring
£249.00
9ct Yellow Gold Two Row Cubic Zirconia Ring
Ramsdens9ct Yellow Gold Two Row Cubic Zirconia Ring
£359.00
9ct Yellow Gold Seven Stone Cubic Zirconia Ring
Ramsdens9ct Yellow Gold Seven Stone Cubic Zirconia Ring
£229.00
9ct Yellow Gold Cubic Zirconia Cluster Ring
Ramsdens9ct Yellow Gold Cubic Zirconia Cluster Ring
£285.00
9ct Yellow Gold Three Stone Cubic Zirconia Ring
Ramsdens9ct Yellow Gold Three Stone Cubic Zirconia Ring
£229.00
9ct Yellow Gold Cubic Zirconia Single Stone Ring
Ramsdens9ct Yellow Gold Cubic Zirconia Single Stone Ring
£249.00
9ct Yellow Gold Cubic Zirconia Half Eternity Ring
Ramsdens9ct Yellow Gold Cubic Zirconia Half Eternity Ring
£189.00
9ct Yellow Gold Cubic Zirconia Single Stone Ring
Ramsdens9ct Yellow Gold Cubic Zirconia Single Stone Ring
£215.00
9ct Yellow Gold Cubic Zirconia Cluster Ring
Ramsdens9ct Yellow Gold Cubic Zirconia Cluster Ring
£305.00
9ct White Gold 0.30ct Diamond Daisy Cluster Ring
15% OFF
Ramsdens9ct White Gold 0.30ct Diamond Daisy Cluster Ring
Was: £499.00
Now: £425.00
Save £74.00 (15%)
18ct Yellow Gold 0.33ct Diamond Trilogy Ring
16% OFF
Ramsdens18ct Yellow Gold 0.33ct Diamond Trilogy Ring
Was: £579.00
Now: £489.00
Save £90.00 (16%)
18ct Yellow Gold 0.73ct Diamond Hearts Ring
Ramsdens18ct Yellow Gold 0.73ct Diamond Hearts Ring
£869.00
18ct Yellow Gold 0.80ct Diamond Eternity Ring
15% OFF
Ramsdens18ct Yellow Gold 0.80ct Diamond Eternity Ring
Was: £829.00
Now: £705.00
Save £124.00 (15%)
18ct Yellow Gold Sapphire and 0.03ct Diamond Cluster Ring
Ramsdens18ct Yellow Gold Sapphire and 0.03ct Diamond Cluster Ring
£299.00
9ct White Gold Red Gemstone and Cubic Zirconia Cluster Ring
Ramsdens9ct White Gold Red Gemstone and Cubic Zirconia Cluster Ring
£219.00
9ct Yellow Gold Cubic Zirconia Double Buckle Ring
Ramsdens9ct Yellow Gold Cubic Zirconia Double Buckle Ring
£399.00
18ct White Gold 0.73ct Diamond Solitaire Ring
29% OFF
Ramsdens18ct White Gold 0.73ct Diamond Solitaire Ring
Was: £4,499.00
Now: £3,199.00
Save £1,300.00 (29%)
From £37.92 / monthFinance options available
18ct White Gold Cubic Zirconia Crossover Ring
Ramsdens18ct White Gold Cubic Zirconia Crossover Ring
£439.00
9ct White Gold 0.33ct Princess and Brilliant Cut Diamond Cluster Ring
15% OFF
Ramsdens9ct White Gold 0.33ct Princess and Brilliant Cut Diamond Cluster Ring
Was: £429.00
Now: £365.00
Save £64.00 (15%)
18ct Yellow Gold 0.50ct Diamond Trilogy Ring
15% OFF
Ramsdens18ct Yellow Gold 0.50ct Diamond Trilogy Ring
Was: £629.00
Now: £535.00
Save £94.00 (15%)
9ct Yellow Gold 0.33ct Diamond Trilogy Ring
15% OFF
Ramsdens9ct Yellow Gold 0.33ct Diamond Trilogy Ring
Was: £549.00
Now: £465.00
Save £84.00 (15%)
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.