Sizing

Finding your PRECISE ring size

Each Guzzardi piece is made to order in your chosen size.
Before ordering a ring, I recommend having your finger measured by a Jeweler and letting them know the width of the design you are considering. 
If you are unsure which size to choose, please contact me before placing your order.
I’ll be happy to help.

How to measure your ring size

A-metal-ring-size-mesurator

For the most reliable measurement, visit a jeweller and ask them to check the finger on which you intend to wear your ring. Mention whether you are choosing a narrow or wide band, as the width can affect the fit.

The ring should feel comfortable at the base of your finger and pass over your knuckle with a little resistance. If you use an adjustable plastic ring sizer at home, avoid pulling it too tightly.

Guzzardi uses UK and Italian ring sizes. If you know your size in another sizing system, please contact me before ordering so we can confirm the equivalent UK or ITA size.

Made to order in your size

Guzzardi 3D ring models showing different sizes with corresponding internal diameters

I use 3D design to adapt each ring to your chosen size before it is made, preserving the proportions and distinctive details of the design.

Each piece is then cast and finished by hand in my London workshop. Confirming your ring size before production helps me create a piece that fits comfortably and stays true to the original design.

 

International Ring Size Conversion Chart

Diameter 

Circumf.

Sizes

MM

Inch

MM

Inch

UK Australia

US Canada

French Russian

German

Japan

Italy Spain

9.91

0.390

31.13

1.22

–

0000

–

–

–

–

10.72

0.422

33.68

1.33

–

00

–

–

–

–

11.53

0.454

36.22

1.43

–

0

–

–

–

–

11.95

0.470

37.54

1.48

A

1/2

–

–

–

–

12.18

0.480

38.26

1.51

A 1/2

3/4

–

–

–

–

12.37

0.487

38.86

1.53

B

1

–

–

1

–

12.60

0.496

39.58

1.56

B 1/2

1 1/4

–

–

–

–

12.78

0.503

40.15

1.58

C

1 1/2

–

–

–

–

13.00

0.512

40.84

1.61

C 1/2

1 3/4

–

–

–

–

13.21

0.520

41.50

1.63

D

2

41 1/2

13 1/2

2

1 .5

13.41

0.528

42.13

1.66

D 1/2

2 1/4

–

–

–

–

13.61

0.536

42.76

1.68

E

2 1/2

42 3/4

13 3/4

3

2 .75

13.83

0.544

43.45

1.71

E 1/2

2 3/4

–

–

–

–

14.05

0.553

44.14

1.74

F

3

44

14

4

4

14.15

0.557

44.45

1.75

F 1/2

3 1/8

–

–

–

–

14.25

0.561

44.77

1.76

F 3/4

3 1/4

–

–

–

–

14.36

0.565

45.11

1.77

G

3 3/8

45 1/4

–

5

5 .25

14.45

0.569

45.40

1.79

G 1/4

3 1/2

–

14 1/2

–

–

14.56

0.573

45.74

1.80

G 1/2

3 5/8

–

–

6

–

14.65

0.577

46.02

1.81

H

3 3/4

46 1/2

–

–

6 .50

14.86

0.585

46.68

1.84

H 1/2

4

–

15

7

–

15.04

0.592

47.25

1.86

I

4 1/4

47 3/4

–

–

7 .75

15.27

0.601

47.97

1.89

I 1/2

4 1/2

–

15 1/4

8

–

15.40

0.606

48.38

1.90

J

4 5/8

49

15 1/2

–

9

15.53

0.611

48.79

1.92

J 1/4

4 3/4

–

–

–

–

15.70

0.618

49.32

1.94

J 1/2

5

–

15 3/4

9

–

15.80

0.622

49.64

1.95

K

5 1/8

50

–

–

10

15.90

0.626

49.95

1.97

K 1/4

5 1/4

–

–

–

–

16.00

0.630

50.27

1.98

K 1/2

5 3/8

–

–

10

–

16.10

0.634

50.58

1.99

L

5 1/2

51 3/4

16

–

11.75

16.30

0.642

51.21

2.02

L 1/4

5 3/4

–

–

–

–

16.41

0.646

51.55

2.03

L 1/2

5 7/8

–

–

–

–

16.51

0.650

51.87

2.04

M

6

52 3/4

16 1/2

12

12.75

16.71

0.658

52.50

2.07

M 1/2

6 1/4

–

–

–

–

16.92

0.666

53.16

2.09

N

6 1/2

54

17

13

14

17.13

0.674

53.82

2.12

N 1/2

6 3/4

–

–

–

–

17.35

0.683

54.51

2.15

O

7

55 1/4

17 1/4

14

15 .25

17.45

0.687

54.82

2.16

O 1/2

7 1/4

–

–

–

–

17.75

0.699

55.76

2.20

P

7 1/2

56 1/2

17 3/4

15

16 .25

17.97

0.707

56.45

2.22

P 1/2

7 3/4

–

–

–

–

18.19

0.716

57.15

2.25

Q

8

57 3/4

18

16

17 .75

18.35

0.722

57.65

2.27

Q 1/2

8 1/4

–

–

–

–

18.53

0.729

58.21

2.29

Q 3/4

8 1/2

–

18 1/2

17

–

18.61

0.733

58.47

2.30

R

8 5/8

59

–

–

19

18.69

0.736

58.72

2.31

R 1/4

8 3/4

–

–

–

–

18.80

0.740

59.06

2.32

R 1/2

8 7/8

–

–

–

–

18.89

0.744

59.34

2.34

R 3/4

9

–

19

18

–

19.10

0.752

60.00

2.36

S

9 1/8

60 1/4

–

–

20 .25

19.22

0.757

60.38

2.38

S 1/4

9 1/4

–

–

–

–

19.31

0.760

60.66

2.39

S 1/2

9 3/8

–

–

–

–

19.41

0.764

60.98

2.40

S 3/4

9 1/2

–

19 1/2

19

–

19.51

0.768

61.29

2.41

T

9 5/8

61 1/2

–

–

21 .50

19.62

0.772

61.64

2.43

T 1/4

9 3/4

–

–

–

–

19.84

0.781

62.33

2.45

T 1/2

10

–

20

20

–

20.02

0.788

62.89

2.48

U

10 1/4

62 3/4

–

21

22 .75

20.20

0.795

63.46

2.50

U 1/2

10 1/2

–

20 1/4

22

–

20.32

0.800

63.84

2.51

V

10 5/8

63

–

–

23 .75

20.44

0.805

64.21

2.53

V 1/4

10 3/4

–

–

–

–

20.68

0.814

64.97

2.56

V 1/2

11

–

20 3/4

23

–

20.76

0.817

65.22

2.57

W

11 1/8

65

–

–

25

20.85

0.821

65.50

2.58

W 1/4

11 1/4

–

–

–

–

20.94

0.824

65.78

2.59

W 1/2

11 3/8

–

–

–

–

21.08

0.830

66.22

2.61

W 3/4

11 1/2

–

21

24

–

21.18

0.834

66.54

2.62

X

11 5/8

66 1/4

–

–

26 .25

21.24

0.836

66.73

2.63

X 1/4

11 3/4

–

–

–

–

21.30

0.839

66.92

2.64

X 1/2

11 7/8

–

–

–

–

21.49

0.846

67.51

2.66

Y

12

67 1/2

21 1/4

25

27 .25

21.69

0.854

68.14

2.68

Y 1/2

12 1/4

–

–

–

–

21.89

0.862

68.77

2.71

Z

12 1/2

68 3/4

21 3/4

26

28.75

22.10

0.870

69.43

2.73

Z +1/2

12 3/4

–

–

–

–

22.33

0.879

70.15

2.76

Z+1

13

–

22

27

–

22.60

0.890

71.00

2.80

Z+1.5

13.5

–

–

–

–

22.69

0.893

71.28

2.81

Z+2

–

–

–

–

–

22.92

0.902

72.00

2.83

Z+2.5

–

–

–

–

–

23.06

0.908

72.45

2.85

Z+3

–

–

–

–

–

23.24

0.915

73.01

2.87

Z+3.5

–

–

–

–

–

23.47

0.924

73.73

2.90

Z+4

–

–

–

–

–

23.55

0.927

73.98

2.91

Z+4.5

–

–

–

–

–

23.87

0.940

74.99

2.95

Z+5

–

–

–

–

–

24.27

0.956

76.25

3.00

Z+6

–

–

–

–

–


Use this chart as a guide to international ring sizes. Conversions between sizing systems are approximate.
If you know your size in another system, please contact me before ordering so we can confirm the most suitable UK size for your chosen design.

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