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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.
18ct Yellow Gold Cubic Zirconia Cluster Ring
Ramsdens18ct Yellow Gold Cubic Zirconia Cluster Ring
£479.00
18ct White Gold Cubic Zirconia Three Stone Ring
Ramsdens18ct White Gold Cubic Zirconia Three Stone Ring
£589.00
Platinum 1.15ct Pink Sapphire and 0.55ct Diamond Vintage Inspired Ring
RamsdensPlatinum 1.15ct Pink Sapphire and 0.55ct Diamond Vintage Inspired Ring
Platinum 0.50ct Diamond Trilogy Ring
RamsdensPlatinum 0.50ct Diamond Trilogy Ring
£699.00
Platinum 0.85ct Diamond Daisy Cluster Ring
RamsdensPlatinum 0.85ct Diamond Daisy Cluster Ring
14ct Yellow Gold Green Marquise Cubic Zirconia Ring
Ramsdens14ct Yellow Gold Green Marquise Cubic Zirconia Ring
£339.00
18ct Yellow Gold 2.30ct Diamond Solitaire Ring
Ramsdens18ct Yellow Gold 2.30ct Diamond Solitaire Ring
Platinum 0.30ct Diamond Solitaire Ring
RamsdensPlatinum 0.30ct Diamond Solitaire Ring
£599.00
18ct White Gold 0.33ct Diamond Trilogy Ring
Ramsdens18ct White Gold 0.33ct Diamond Trilogy Ring
£599.00
9ct White Gold 0.25ct Diamond Cluster Ring
Ramsdens9ct White Gold 0.25ct Diamond Cluster Ring
£439.00
Platinum 0.35ct Diamond Solitaire Ring
RamsdensPlatinum 0.35ct Diamond Solitaire Ring
£549.00
9ct Yellow Gold Created Blue Topaz And Diamond Ring
Ramsdens9ct Yellow Gold Created Blue Topaz And Diamond Ring
£449.00
9ct White Gold Pink Gem Stone Set Ring
Ramsdens9ct White Gold Pink Gem Stone Set Ring
£379.00
9ct Yellow Gold Created Blue Topaz Ring
Ramsdens9ct Yellow Gold Created Blue Topaz Ring
£379.00
9ct White Gold Created Amethyst and Diamond Heart Dress Ring
Ramsdens9ct White Gold Created Amethyst and Diamond Heart Dress Ring
£389.00
9ct White Gold Created Topaz and Diamond Heart Ring
Ramsdens9ct White Gold Created Topaz and Diamond Heart Ring
£285.00
9ct Yellow Gold Triangular Created Amethyst Ring
Ramsdens9ct Yellow Gold Triangular Created Amethyst Ring
£379.00
9ct Yellow Gold Topaz And 0.15ct Diamond Ring
Ramsdens9ct Yellow Gold Topaz And 0.15ct Diamond Ring
£289.00
9ct Yellow and White Gold 1.18ct Diamond Halo Cluster Ring by Anya Belle
Ramsdens9ct Yellow and White Gold 1.18ct Diamond Halo Cluster Ring by Anya Belle
9ct White Gold 1.00ct Diamond Two Row Ring
Ramsdens9ct White Gold 1.00ct Diamond Two Row Ring
14ct White Gold 1.00ct Diamond Cluster Ring
Ramsdens14ct White Gold 1.00ct Diamond Cluster Ring
9ct Yellow Gold Peridot Fancy Cluster Ring
Ramsdens9ct Yellow Gold Peridot Fancy Cluster Ring
£359.00
9ct White Gold Blue Topaz and Diamond Crossover Ring
Ramsdens9ct White Gold Blue Topaz and Diamond Crossover Ring
£475.00
9ct White Gold Blue Topaz and Diamond Square Ring
Ramsdens9ct White Gold Blue Topaz and Diamond Square 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.