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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 Curb Style Signet Ring
Ramsdens9ct Yellow Gold Curb Style Signet Ring
£269.00
9ct Yellow Gold Cubic Zirconia and Sapphire Eternity Ring
Ramsdens9ct Yellow Gold Cubic Zirconia and Sapphire Eternity Ring
£129.00
9ct Yellow Gold Tanzanite Cluster Ring
Ramsdens9ct Yellow Gold Tanzanite Cluster Ring
£249.00
9ct Yellow Gold Pearl Two Stone Ring
Ramsdens9ct Yellow Gold Pearl Two Stone Ring
£249.00
9ct Yellow Gold Cubic Zirconia Ring
Ramsdens9ct Yellow Gold Cubic Zirconia Ring
£169.00
9ct Yellow Gold 0.25ct Brilliant Cut Diamond Solitaire Ring
Ramsdens9ct Yellow Gold 0.25ct Brilliant Cut Diamond Solitaire Ring
£329.00
18ct Yellow Gold 0.15ct Diamond Cluster Ring
Ramsdens18ct Yellow Gold 0.15ct Diamond Cluster Ring
£329.00
9ct Yellow Gold 0.25ct Princess and Brilliant Cut Diamond Cluster Ring
Ramsdens9ct Yellow Gold 0.25ct Princess and Brilliant Cut Diamond Cluster Ring
£329.00
18ct Yellow Gold 0.50ct Brilliant Cut Diamond Solitaire Ring
Ramsdens18ct Yellow Gold 0.50ct Brilliant Cut Diamond Solitaire Ring
£799.00
18ct Yellow Gold 0.20ct Brilliant Cut Diamond and Morganite Cluster Ring
Ramsdens18ct Yellow Gold 0.20ct Brilliant Cut Diamond and Morganite Cluster Ring
£649.00
18ct White Gold 0.45ct Brilliant Cut Diamond Solitaire Ring
Ramsdens18ct White Gold 0.45ct Brilliant Cut Diamond Solitaire Ring
£779.00
9ct Yellow Gold 0.33ct Brilliant Cut Diamond Half Eternity Ring
Ramsdens9ct Yellow Gold 0.33ct Brilliant Cut Diamond Half Eternity Ring
£479.00
18ct Yellow Gold 0.50ct Princess Cut Diamond Solitaire Ring
Ramsdens18ct Yellow Gold 0.50ct Princess Cut Diamond Solitaire Ring
£869.00
9ct Yellow Gold 1.05ct Brilliant Cut Diamond Solitaire Ring
Ramsdens9ct Yellow Gold 1.05ct Brilliant Cut Diamond Solitaire Ring
9ct Yellow Gold Sister Fancy Ring
Ramsdens9ct Yellow Gold Sister Fancy Ring
£119.00
Silver Diamond Vintage Style Ring By Icesia
RamsdensSilver Diamond Vintage Style Ring By Icesia
£29.00
Silver Cubic Zirconia Five Stone Ring By Icesia
RamsdensSilver Cubic Zirconia Five Stone Ring By Icesia
£25.00
Silver Blue Gemstone and Cubic Zirconia Cluster Ring By Icesia
RamsdensSilver Blue Gemstone and Cubic Zirconia Cluster Ring By Icesia
£49.00
Silver Green Gemstone and Cubic Zirconia Cluster Ring By Icesia
RamsdensSilver Green Gemstone and Cubic Zirconia Cluster Ring By Icesia
£45.00
Silver Red Gemstone and Cubic Zirconia Cluster Ring By Icesia
RamsdensSilver Red Gemstone and Cubic Zirconia Cluster Ring By Icesia
£45.00
Silver Red Gemstone and Cubic Zirconia Cluster Ring By Icesia
RamsdensSilver Red Gemstone and Cubic Zirconia Cluster Ring By Icesia
£25.00
Silver Cubic Zirconia Half Eternity Ring By Icesia
RamsdensSilver Cubic Zirconia Half Eternity Ring By Icesia
£19.00
Silver Cubic Zirconia and Blue Gemstone Half Eternity Ring By Icesia
RamsdensSilver Cubic Zirconia and Blue Gemstone Half Eternity Ring By Icesia
£19.00
Silver Cubic Zirconia Heart Ring By Icesia
RamsdensSilver Cubic Zirconia Heart Ring By Icesia
£19.00
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.