Discover / Size Guide
Size Guide
Choosing the correct size helps ensure your ARIN London piece feels comfortable and sits beautifully when worn.
The guidance below is intended to assist with selecting ring, bracelet, and necklace sizes before placing your order.
RING SIZE
Method One — Measure an Existing Ring
Place a ring that fits the intended finger on a flat surface and measure the inside diameter of the ring.
Match your measurement to the size chart below.
Method Two — Measure Your Finger
Wrap a thin strip of paper, string, or measuring tape around the base of your finger.
Mark where the ends meet and measure the length. This measurement represents your finger circumference.
Match your measurement to the size chart below.
Ring Size Chart
UK H / US 4 / EU 47
Diameter: 14.9 mm (0.59”)
Circumference: 47 mm (1.85”)
UK J / US 5 / EU 49
Diameter: 15.7 mm (0.62”)
Circumference: 49 mm (1.93”)
UK L / US 6 / EU 51
Diameter: 16.5 mm (0.65”)
Circumference: 51 mm (2.01”)
UK N / US 7 / EU 53
Diameter: 17.3 mm (0.68”)
Circumference: 53 mm (2.09”)
UK P / US 8 / EU 56
Diameter: 18.1 mm (0.71”)
Circumference: 56 mm (2.20”)
UK R / US 9 / EU 58
Diameter: 18.9 mm (0.74”)
Circumference: 58 mm (2.28”)
UK T / US 10 / EU 61
Diameter: 19.8 mm (0.78”)
Circumference: 61 mm (2.40”)
Ring Sizing Tips
• Fingers are often slightly larger at the end of the day and during warmer weather
• For the most accurate result, measure your finger in the evening
• Measure more than once to confirm accuracy
• If you are between sizes, we generally recommend selecting the larger size
• Finger size may vary between your left and right hand
• Many ARIN Classic Collection rings are adjustable. Please refer to the individual product description for details
BRACELET SIZE
Measure around your wrist using a flexible measuring tape or a strip of paper.
For a comfortable fit, add approximately 1–1.5 cm (0.4–0.6”) to your wrist measurement.
Bracelet Size Guide
Wrist under 13 cm (5.1”)
Recommended bracelet size: 14 cm (5.5”)
Wrist 13–15 cm (5.1–5.9”)
Recommended bracelet size: 15.3–18 cm (6–7”)
Wrist 15–17 cm (5.9–6.7”)
Recommended bracelet size: 18–20 cm (7–8”)
Wrist 17–19 cm (6.7–7.5”)
Recommended bracelet size: 20–23 cm (8–9”)
NECKLACE LENGTH GUIDE
40 cm (16”)
Sits close to the collar.
45 cm (18”)
Falls around the collarbone.
50 cm (20”)
Sits at the upper chest.
55 cm (22”)
Falls at mid-chest.
60 cm (24”)
Falls at the lower chest.
As necklace placement may vary depending on body shape, neck size, styling preference, and garment choice, these measurements are provided as a general guide only.
IMPORTANT INFORMATION
The measurements, size charts, recommendations, illustrations, conversions, and fitting guidance provided on this page are intended as general guidance only.
Actual fit may vary depending on finger shape, knuckle size, wrist shape, body proportions, personal preference, measuring technique, environmental conditions, and individual product design.
Size conversions between UK, US, EU, and other international sizing systems are provided as approximate equivalents and may vary slightly between manufacturers, countries, and industry standards.
ARIN London does not guarantee the accuracy of customer measurements or the suitability of a selected size based on information provided by the customer.
Customers are responsible for selecting their preferred size before placing an order. We strongly recommend measuring carefully and contacting our Client Care team if additional guidance is required before purchase.
Personalised, engraved, resized, bespoke, custom-made, altered, made-to-order, and special-order pieces may not be eligible for cancellation, return, exchange, or refund in accordance with our Returns, Refunds & Exchanges Policy.
Please refer to our Returns, Refunds & Exchanges Policy for further information regarding sizing-related returns and exchanges.
STILL UNSURE?
Contact care@arinlondon.com and our Client Care team will be happy to assist with sizing guidance before you place your order.
We would much rather help you select the right size before purchase than have you receive a piece that does not fit as intended.