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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 0.50ct Brilliant Cut Diamond Cluster Ring
Ramsdens9ct Yellow Gold 0.50ct Brilliant Cut Diamond Cluster Ring
£559.00
18ct Yellow Gold 0.25ct Brilliant Cut Diamond and Sapphire Cluster Ring
Ramsdens18ct Yellow Gold 0.25ct Brilliant Cut Diamond and Sapphire Cluster Ring
£649.00
9ct Yellow Gold 0.40ct Brilliant Cut Lab Grown Diamond and Pink Gemstone Fancy Ring
Ramsdens9ct Yellow Gold 0.40ct Brilliant Cut Lab Grown Diamond and Pink Gemstone Fancy Ring
£489.00
18ct White Gold 0.50ct Brilliant Cut Diamond Solitaire Ring
Ramsdens18ct White Gold 0.50ct Brilliant Cut Diamond Solitaire Ring
£519.00
9ct Yellow Gold Cubic Zirconia Four Row Ring
Ramsdens9ct Yellow Gold Cubic Zirconia Four Row Ring
£359.00
9ct Yellow Gold Wedding Band 6mm
Ramsdens9ct Yellow Gold Wedding Band 6mm
£389.00
9ct Yellow Gold Shield Signet Ring
Ramsdens9ct Yellow Gold Shield Signet Ring
£359.00
9ct Yellow Gold Celtic Ring
Ramsdens9ct Yellow Gold Celtic Ring
£219.00
18ct Yellow White and Rose Gold 0.20ct Brilliant Cut Diamond Wishbone Ring
Ramsdens18ct Yellow White and Rose Gold 0.20ct Brilliant Cut Diamond Wishbone Ring
£749.00
18ct White Gold 0.50ct Round Brilliant Cut Diamond Solitaire Ring
Ramsdens18ct White Gold 0.50ct Round Brilliant Cut Diamond Solitaire Ring
14ct Yellow Gold Cubic Zirconia Wishbone Ring
Ramsdens14ct Yellow Gold Cubic Zirconia Wishbone Ring
£159.00
9ct Yellow Gold Cubic Zirconia and Amethyst Solitaire Ring
Ramsdens9ct Yellow Gold Cubic Zirconia and Amethyst Solitaire Ring
£219.00
18ct White Gold 0.35ct Brilliant Cut Diamond Eternity Ring
Ramsdens18ct White Gold 0.35ct Brilliant Cut Diamond Eternity Ring
£679.00
9ct Yellow Gold 0.20ct Brilliant Cut Diamond Cluster Ring
Ramsdens9ct Yellow Gold 0.20ct Brilliant Cut Diamond Cluster Ring
£279.00
18ct White Gold 0.25ct Brilliant Cut Diamond Half Eternity Ring
Ramsdens18ct White Gold 0.25ct Brilliant Cut Diamond Half Eternity Ring
£329.00
9ct White Gold 0.10ct Brilliant Cut Diamond Solitaire Ring
Ramsdens9ct White Gold 0.10ct Brilliant Cut Diamond Solitaire Ring
£279.00
22ct Yellow and White Gold Cubic Zirconia Cluster Ring
Ramsdens22ct Yellow and White Gold Cubic Zirconia Cluster Ring
£415.00
22ct Yellow Gold Patterned Wedding Band 5.4mm
Ramsdens22ct Yellow Gold Patterned Wedding Band 5.4mm
14ct Yellow and White Gold Infinity Ring
Ramsdens14ct Yellow and White Gold Infinity Ring
£245.00
Silver Cubic Zirconia Single Stone Ring By Icesia
RamsdensSilver Cubic Zirconia Single Stone Ring By Icesia
£35.00
Silver Cubic Zirconia Five Stone Ring By Icesia
RamsdensSilver Cubic Zirconia Five Stone Ring By Icesia
£19.00
Silver Cubic Zirconia Single Stone Twist Ring By Icesia
RamsdensSilver Cubic Zirconia Single Stone Twist Ring By Icesia
£19.00
9ct Yellow Gold Blue Topaz Heart Ring
Ramsdens9ct Yellow Gold Blue Topaz Heart Ring
£159.00
9ct Yellow and Rose Gold Clogau Celtic Band 6.5mm
Ramsdens9ct Yellow and Rose Gold Clogau Celtic Band 6.5mm
£319.00
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.