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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 White Gold 0.65cts Diamond Twist Ring
40% OFF
Ramsdens9ct White Gold 0.65cts Diamond Twist Ring
Was: £749.00
Now: £449.00
Save £300.00 (40%)
18ct White Gold 1.35ct Diamond Trilogy Ring
13% OFF
Ramsdens18ct White Gold 1.35ct Diamond Trilogy Ring
Was: £3,950.00
Now: £3,455.00
Save £495.00 (13%)
From £40.96 / monthFinance options available
18ct White Gold 3.23ct Diamond Trilogy Ring
13% OFF
Ramsdens18ct White Gold 3.23ct Diamond Trilogy Ring
Was: £9,450.00
Now: £8,269.00
Save £1,181.00 (13%)
From £98.03 / monthFinance options available
18ct White Gold 0.50ct Heart Shaped Diamond Cluster Ring
13% OFF
Ramsdens18ct White Gold 0.50ct Heart Shaped Diamond Cluster Ring
Was: £2,995.00
Now: £2,619.00
Save £376.00 (13%)
From £31.05 / monthFinance options available
18ct White Gold 0.50ct Oval Diamond Cluster Ring
13% OFF
Ramsdens18ct White Gold 0.50ct Oval Diamond Cluster Ring
Was: £2,995.00
Now: £2,619.00
Save £376.00 (13%)
From £31.05 / monthFinance options available
14ct Yellow And White Gold Ring
Ramsdens14ct Yellow And White Gold Ring
£389.00
9ct White Gold 0.22ct Diamond 6 Row Crossover Ring by Anya Belle
Ramsdens9ct White Gold 0.22ct Diamond 6 Row Crossover Ring by Anya Belle
£549.00
MRRP £899.00
9ct Yellow Gold 0.22ct Diamond 6 Row Crossover Ring by Anya Belle
Ramsdens9ct Yellow Gold 0.22ct Diamond 6 Row Crossover Ring by Anya Belle
£549.00
MRRP £899.00
9ct Yellow Gold Ribbed Tenth Krugerrand Ring Mount
Ramsdens9ct Yellow Gold Ribbed Tenth Krugerrand Ring Mount
£425.00
RRP £719.00
9ct Yellow Gold Scroll Tenth Krugerrand Ring Mount
Ramsdens9ct Yellow Gold Scroll Tenth Krugerrand Ring Mount
£459.00
RRP £785.00
9ct Yellow Gold Tenth Krugerrand Hearts Ring Mount
Ramsdens9ct Yellow Gold Tenth Krugerrand Hearts Ring Mount
£325.00
RRP £555.00
9ct Yellow Gold St George Insert Basket Ring
Ramsdens9ct Yellow Gold St George Insert Basket Ring
£275.00
RRP £469.00
9ct White Gold 0.50ct Diamond Cluster Ring by Anya Belle
Ramsdens9ct White Gold 0.50ct Diamond Cluster Ring by Anya Belle
£649.00
MRRP £1,299.00
9ct Yellow Gold 0.50ct Diamond Cluster Ring by Anya Belle
Ramsdens9ct Yellow Gold 0.50ct Diamond Cluster Ring by Anya Belle
£649.00
MRRP £1,099.00
9ct White Gold 0.63ct Diamond Cluster Ring by Anya Belle
25% OFF
Ramsdens9ct White Gold 0.63ct Diamond Cluster Ring by Anya Belle
Was: £749.00
Now: £559.00
Save £190.00 (25%)
9ct White Gold 0.32ct Diamond Cluster Ring by Anya Belle
25% OFF
Ramsdens9ct White Gold 0.32ct Diamond Cluster Ring by Anya Belle
Was: £629.00
Now: £469.00
Save £160.00 (25%)
9ct Yellow Gold 0.63ct Diamond Cluster Shoulders Ring by Anya Belle
Ramsdens9ct Yellow Gold 0.63ct Diamond Cluster Shoulders Ring by Anya Belle
£749.00
MRRP £1,499.00
9ct Yellow Gold 0.33ct Diamond Eternity Ring by Anya Belle
Ramsdens9ct Yellow Gold 0.33ct Diamond Eternity Ring by Anya Belle
£549.00
MRRP £1,099.00
9ct Yellow Gold 0.35ct Diamond Cluster Ring by Anya Belle
Ramsdens9ct Yellow Gold 0.35ct Diamond Cluster Ring by Anya Belle
£629.00
MRRP £1,250.00
9ct Yellow Gold 0.17ct Diamond Eternity Ring by Anya Belle
Ramsdens9ct Yellow Gold 0.17ct Diamond Eternity Ring by Anya Belle
£329.00
9ct White Gold 0.17ct Diamond Half Eternity Ring by Anya Belle
Ramsdens9ct White Gold 0.17ct Diamond Half Eternity Ring by Anya Belle
£329.00
MRRP £539.00
9ct Yellow Gold 0.43ct Diamond Triple Cluster Ring by Anya Belle
25% OFF
Ramsdens9ct Yellow Gold 0.43ct Diamond Triple Cluster Ring by Anya Belle
Was: £649.00
Now: £485.00
Save £164.00 (25%)
9ct White Gold 0.43ct Diamond Triple Cluster Ring by Anya Belle
Ramsdens9ct White Gold 0.43ct Diamond Triple Cluster Ring by Anya Belle
£649.00
18ct White Gold 1.00ct Diamond Solitaire Ring
24% OFF
Ramsdens18ct White Gold 1.00ct Diamond Solitaire Ring
Was: £7,499.00
Now: £5,699.00
Save £1,800.00 (24%)
From £67.56 / 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.