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About Daniel Prince of London
Tax Free Shopping - London Jewellers UKDaniel Prince of London supports the Kimberley ProcessBritish Jewellers Association Member - London Jewellers UKGIA Diamond Education - How to Buy a Diamond
We guarantee that our diamonds are conflict-free by purchasing from legitimate sources not involved in funding conflict and in compliance with United Nations resolution, based on personal knowledge and/or written guarantees provided by our diamond suppliers.
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to everyone getting married...
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Daniel Prince Limited
3 Fullwoods Mews,London N1 6BF
Registered in UK: 04730127
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Stones & Metals: Ring Sizing
made to measure
 
How to determine your ring size

1. Wrap a piece of string or a strip of paper around your finger.
2. Mark the point where the two ends meet.
3. Measure the string against a ruler to get the circumference.
4. Divide that by 3.14 to get the diameter of your finger.
5. Look up your ring size using the table below.

Alternatively, please Email us and we will send you a FREE ring sizer (UK Residents ONLY!)

 (feel free to make a donation here!).
 

 US

Diameter
inches

Diameter
mm

UK

1/2

15/32

11.95

A

1

31/64

12.37

B

1 1/2

1/2

12.78

C

2

33/64

13.21

D

2 1/2

17/32

13.61

E

3

35/64

14.05

F

3 1/2

9/16

14.45

 

4

37/64

14.86

H 1/2

4 1/2

19/32

15.27

I 1/2

5

5/8

15.70

J 1/2

5 1/2

41/64

16.10

L

6

21/32

16.51

M

6 1/2

43/64

16.92

N

7

11/16

17.35

O

7 1/2

45/64

17.75

P

8

23/32

18.19

Q

8 1/2

47/64

18.53

 

9

3/4

18.89

 

9 1/2

49/64

19.41

 

10

25/32

19.84

T 1/2

10 1/2

51/64

20.20

U 1/2

11

13/16

20.68

V 1/2

11 1/2

53/64

21.08

 

12

27/32

21.49

Y

12 1/2

55/64

21.89

Z

13

7/8

22.33

 

 
If you're buying the ring as a surprise
Ask your partner's mother or one of their friends if they know their finger size. Borrow one of your partners rings and slide it down a tapered candle. Then measure according to the ring sizer you received in the mail or using the chart above.
 
Tips on getting an accurate ring size
After sliding the ring sizer on, make sure it slides off easily over the knuckle. Don't measure cold fingers, as this is when fingers are their smallest. For the most accurate reading, measure the finger at the end of the day when the finger is the largest.
goto Portfolio: Engagement Rings
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