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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 Green Gemstone And Cubic Zirconia Cluster Ring
Ramsdens9ct Yellow Gold Green Gemstone And Cubic Zirconia Cluster Ring
£195.00
9ct Yellow Gold Green Gemstone And Cubic Zirconia Cluster Ring
Ramsdens9ct Yellow Gold Green Gemstone And Cubic Zirconia Cluster Ring
£349.00
9ct Yellow Gold Green Gemstone And Cubic Zirconia Wishbone Ring
Ramsdens9ct Yellow Gold Green Gemstone And Cubic Zirconia Wishbone Ring
£195.00
9ct Yellow Gold Cubic Zirconia Cluster Ring
Ramsdens9ct Yellow Gold Cubic Zirconia Cluster Ring
£359.00
9ct White Gold Cubic Zirconia Half Eternity Ring
Ramsdens9ct White Gold Cubic Zirconia Half Eternity Ring
£265.00
9ct White Gold Cubic Zirconia Single Stone Ring
Ramsdens9ct White Gold Cubic Zirconia Single Stone Ring
£305.00
9ct White Gold Cubic Zirconia Single Stone Ring
Ramsdens9ct White Gold Cubic Zirconia Single Stone Ring
£265.00
9ct Yellow Gold Cubic Zirconia Trilogy Ring
Ramsdens9ct Yellow Gold Cubic Zirconia Trilogy Ring
£219.00
9ct Yellow Gold Mum Ring
Ramsdens9ct Yellow Gold Mum Ring
£195.00
9ct Yellow Gold Cubic Zirconia Cluster Ring
Ramsdens9ct Yellow Gold Cubic Zirconia Cluster Ring
£195.00
9ct Yellow Gold Five Row Keeper Ring
Ramsdens9ct Yellow Gold Five Row Keeper Ring
£265.00
Vera Wang 18ct White Gold 0.95ct Princess Baguette and Brilliant Cut Diamond Cluster Ring
15% OFF
RamsdensVera Wang 18ct White Gold 0.95ct Princess Baguette and Brilliant Cut Diamond Cluster Ring
Was: £2,299.00
Now: £1,955.00
Save £344.00 (15%)
From £23.18 / monthFinance options available
14ct Yellow Gold Red Gemstone And Cubic Zirconia Cluster Ring
Ramsdens14ct Yellow Gold Red Gemstone And Cubic Zirconia Cluster Ring
£385.00
18ct Yellow Gold 0.50ct Brilliant Cut Diamond Cluster Ring
15% OFF
Ramsdens18ct Yellow Gold 0.50ct Brilliant Cut Diamond Cluster Ring
Was: £529.00
Now: £449.00
Save £80.00 (15%)
18ct White Gold 0.60ct Brilliant Cut Diamond Fancy Ring
15% OFF
Ramsdens18ct White Gold 0.60ct Brilliant Cut Diamond Fancy Ring
Was: £1,499.00
Now: £1,275.00
Save £224.00 (15%)
From £17.84 / monthFinance options available
18ct Yellow Gold 0.50ct Brilliant Cut Diamond Solitaire Ring
15% OFF
Ramsdens18ct Yellow Gold 0.50ct Brilliant Cut Diamond Solitaire Ring
Was: £849.00
Now: £719.00
Save £130.00 (15%)
Platinum Princess And Brilliant Cut 3.00ct Yellow And White Diamond Cluster Ring
40% OFF
RamsdensPlatinum Princess And Brilliant Cut 3.00ct Yellow And White Diamond Cluster Ring
Was: £8,999.00
Now: £5,399.00
Save £3,600.00 (40%)
From £64.00 / monthFinance options available
18ct Yellow Gold 0.75ct Diamond Solitaire Ring
38% OFF
Ramsdens18ct Yellow Gold 0.75ct Diamond Solitaire Ring
Was: £2,249.00
Now: £1,399.00
Save £850.00 (38%)
From £17.91 / monthFinance options available
9ct Yellow Gold Five Row Keeper Ring
Ramsdens9ct Yellow Gold Five Row Keeper Ring
18ct White Gold 1.47ct Diamond Cluster Ring
15% OFF
Ramsdens18ct White Gold 1.47ct Diamond Cluster Ring
Was: £1,799.00
Now: £1,529.00
Save £270.00 (15%)
From £18.13 / monthFinance options available
Silver Red Gemstone And Cubic Zirconia Cluster Ring By Icesia
RamsdensSilver Red Gemstone And Cubic Zirconia Cluster Ring By Icesia
£25.00
9ct White Gold 0.25ct Diamond Triple Cluster Ring
Ramsdens9ct White Gold 0.25ct Diamond Triple Cluster Ring
£319.00
18ct White Gold 0.70ct Diamond Solitaire Ring
15% OFF
Ramsdens18ct White Gold 0.70ct Diamond Solitaire Ring
Was: £1,499.00
Now: £1,275.00
Save £224.00 (15%)
From £17.84 / monthFinance options available
18ct White Gold 1.00ct Diamond Fancy Ring
15% OFF
Ramsdens18ct White Gold 1.00ct Diamond Fancy Ring
Was: £1,499.00
Now: £1,275.00
Save £224.00 (15%)
From £17.84 / monthFinance options available
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.