FREE UK Standard delivery on all orders, delivered in 2-3 working days.
FREE UK Next Day delivery on orders over £75, delivered next working day.
£5 UK Next Day delivery on orders below £75, delivered next working day.

Please note: Due to new regulations shipping to Portugal is currently suspended until the end of March.

EU orders: We would like to reassure all of our European customers that there will be no uninvited costs (additional customs taxes and duties) from Brexit's new trading laws.

For Europe, US and other international deliveries please see Shipping for full details.

^* We have extended our returns period to 60 days to give you more time to send orders back, including Sale items. Please see Returns for more details.

^* Please note: Engraved and Monogrammed items are non-returnable / non-refundable unless faulty.

You can measure your ring size in a number of ways. In the UK it is measured alphabetically, in the US it is done numerically, or you can measure the Internal Diameter or Circumference.

Our guide is on hand to take the guesswork out of ring shopping.

Take an existing ring and measure its diameter across - or, measure around your finger - and then look up the corresponding ring size.

RING DIAMETER	FINGER CIRCUMFERENCE	RING SIZE
(mm)	(mm)	UK	US	EU	China
14.8	46.5	H	3 ^3/4	46 ^1/2	7
15.2	47.8	I	4 ^1/8	47 ^1/2	8
15.6	49.0	J	4 ^5/8	48 ^1/2	9
16.0	50.3	K	5 ^1/4	50	10
16.4	51.5	L	5 ^1/2	51	11
16.8	52.8	M	6	52 ^1/2	12
17.2	54.0	N	6 ^1/2	53 ^1/2	13
17.4	54.7	O	7	55	14
18.0	56.6	P	7 ^1/2	56	15
18.4	57.8	Q	8	57 ^1/2	16
19.0	59.1	R	8 ^5/8	59	17
19.2	60.3	S	9 ^1/8	60^1/4	19
20	62.8	U	10 ^1/4	62^3/4	21
20.3	63.8	V	11	63	23

How do I measure my ring finger?

- Wrap a narrow strip of paper or piece of string comfortably around your intended finger.
- Mark the end (where it meets) and measure the distance. This is the circumference.
- Match the measurement to the circumference column in the above conversion chart. If it falls between 2 sizes, we advise you to order the larger sizes.

How do I measure a ring I already own?

How to measure the Inside Diameter of your Ring:
- Select one of your rings that properly fits the intended finger.
- Measure the INSIDE diameter of the ring using our helpful Printable Ring Sizing Guide.
- Match the measurement of your ring against one of the images. If it falls somewhere in between two sizes then you should opt for the larger size.

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Sphere Ridge Ring

Name: Sphere Ridge Ring
Brand: Missoma
SKU: SP-G-R7-BX-J
Price: 79.0 GBP
Availability: InStock

£79

18ct Gold Plated, Black Onyx , J

Choose size

Size guide

View product details

2 Year Warranty
Free Delivery & Returns^* Learn more
Delivered in 1-2 working days. Change country

Metal: 18ct Gold Plated
Dimensions: 6.4mm x 14mm
Weight: 6.65g
Bring some retro into your everyday ring collection. With a raised black onyx cabouchon gemstone anchored by circular ridge detailing, this stand out ring makes an impact worn solo or styled with other pieces from the Spheres collection.

Product code: SP-G-R7-BX-J
This piece should be stored in a cool, dry place and cleaned carefully with a soft non-abrasive cloth to maintain shine.
Read our jewellery care guide to find out how best to care for your jewellery.

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