How to find your ring size

Choosing the right ring size can be a little difficult; whether it's for yourself, a partner or a friend. To make things easy, just follow our tools and tips on how to pick the perfect size.

The most commonly purchased women’s ring sizes are a UK size J & K (small) and a UK L & M (medium).

UK / AUS	US	EU	Inside Diameter mm	Circ. mm
E	2 1/2	42	13.7	42.9
F	3	44	14.1	44.2
G	3.5	45	14.5	45.5
H	4	46	14.9	46.7
I	4.5	48	15.3	48
J	5	49	15.5	48.7
K	5.5	50	15.9	49.9
L	6	51	16.3	51.2
M	6.5	53	16.7	52.5
N	7	54	17.1	53.8
O	7.5	55	17.5	55
P	8	56	17.9	56.3
Q	8 1/4	57 1/2	18.3	57.6
Still not sure?Take a look at our more in-depth size guide here

The classic square stud, a versatile essential.

Crafted in solid 9-karat yellow gold featuring a sparkling white sapphire. Designed to be with you for years to come.

9-karat solid yellow gold
Ethically sourced White sapphires stone
3mm x 3mm
Secure butterfly closure

About Solid Yellow Gold

Our recycled solid 9-karat gold is a luxurious and wearable metal that does not tarnish easily. Our solid gold alloy contains Copper, Zinc and Silver, which together create its beautiful soft golden hue and high durability. An everyday material designed to be worn and loved.

Recycled Gold & Silver

Our precious raw metals are from 100% recycled sources certified for their quality by the Responsible Jewellery Council and London Bullion Market Association. By opting for recycled metals, we gain greater transparency over our source and lighten our CO2 footprint by over 60%.
Responsibly Handcrafted

We have worked with the same specialist jewellery workshops from the very beginning. Our Indian and Thai workshops employ skilled craftsmen to hand make every element of our pieces. We know the teams well and have both workshops regularly audited. We love to share that our Thai workshop is made up of 70% women, with an exclusively female management.
Circular Mindset

We are committed to circularity and believe jewellery is a unique format with which this is truly possible. From our non-seasonal design and long-lasting recycled raw materials to our recycling and repairs initiative, we hope to encourage a new circular mind-set amongst our peers and consumers.
Say no to plastic

We have been working to eliminate the plastic we don’t need in our supply chain, and innovate on the plastic we do need so that it is safely reused, recycled or composted. Our packaging has no foam or plastic, and we receive each piece from our workshops in biodegradable cellulose film bags.
Carbon Neutral

By using a Life Cycle Assessment format, we have calculated the carbon footprint of our designs from workshop to customer. This approach gives us the data we need to lighten our footprint and off-set accurately.

UK (mainland)

Learn more

Standard	2-3 working days	£5.40
Orders over £100	2-3 working days	FREE
Next Day	Order before 12pm Mon-Fri	£8
Same Day	Order before 12pm Mon-Fri (London only)	£20

Free UK Returns

We offer free UK returns. Please email us on hello@otiumberg.com and we will get back to you with a free returns label to cover the shipment.

International Delivery

Learn more

UK Tax is removed from the price for all international customers. Taxes & duties will now be payable on receipt along at local rates.

We deliver globally with DHL Express & FedEx
Our international delivery costs vary by country, and will be calculated at checkout dependent on your location and the shipping service you chose. Learn More.

International Returns

We accept International returns on the full collection within 14 days of receipt. We are unable at this moment to cover the return shipping cost. Learn More.

*Please note: Engraved & Made To Order items are non-returnable / non-refundable unless faulty.

As a family business, quality and trust are at our core.

Thats why each product is protected with our 1 year warranty, with an easy to access repair and re-plating service beyond that.

For detailed care and cleaning tips, visit our dedicated Materials & Care page.

White Sapphire Square Stud
9-karat solid yellow gold

£100.00

- Free shipping

See details See details

Single

Pair

Recycled Raw
Materials

1 Year
Warranty

We are
Carbon Neutral

Global Shipping
& Easy Returns

Plastic-Free
Packaging

Responsibly
Handmade