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

Meet the Siren Necklace.

A smooth curvaceous design creates this classic golden necklace.

Crafted in recycled sterling silver with gold vermeil, it's designed for everyday wear.

Yellow Gold Vermeil
Total length 40cm/15.74"
Lengthwise adjustable with extension at 38cm/14.96"
Pendant 17x17mm diameter
Luxurious lobster closure

About Yellow Gold Vermeil

Gold vermeil is a technique from the 19th century that applies thick layers of gold onto a sterling silver base (2.5 microns to be exact). At Otiumberg we ensure our gold plate matches the golden hue of our solid gold pieces, so that you can mix and match the full collection effortlessly.

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)

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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 and easy UK returns. All returns and exchanges must be sent back using our UK Returns Portal. Please connect with us on chat or email hello@otiumberg.com if you have any problems booking your return.

International Delivery

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We have partnered with Global-e for our international deliveries to ensure that every order is sent efficiently and quickly. There will be no additional charges for import duties & taxes on delivery, as these will be included in the price of the product or optioned to pre-pay at checkout. Please visit our Delivery page for more information.

International Returns

We accept International returns 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.