At Alvin Gems, we understand the importance of finding the perfect fit for your rings. That's why we provide a clear reference to the size of each item in our product description.

When it comes to finding the perfect ring, ensuring the right fit is crucial. The measurement known as 'ring size' determines the inside circumference of a ring, ensuring that it fits snugly and comfortably on your finger.

In this comprehensive guide, we will explore different standardized systems used across various countries, and provide you with a handy chart to assist you in finding the ideal fit. Let's embark on this journey to discover your perfect ring size!

Understanding Ring Sizes

Determining your ring size is a fundamental step in the ring-buying process. It ensures that the ring you choose not only complements your style but also fits flawlessly. Ring sizes are denoted by specific measurements, typically in millimetres or inches, depending on the country's standardized system.

International Ring Size Systems

Different countries have adopted standardized systems to denote ring sizes. Let's explore the three most common systems used in the UK, EU & USA, and internationally.

1. UK Ring Size System

The United Kingdom employs a widely recognized ring size system that relies on letters of the alphabet to represent different sizes. The chart below showcases the letters and their corresponding circumference measurements.

2. Australian Ring Sizes

If you reside in Australia, determining your ring size is simple. Australian ring sizes align with the UK system, making it convenient to find the perfect fit. By referring to the UK ring sizes provided above, you can effortlessly discover your ideal ring size without any additional conversion.

3. USA Ring Size System

In the United States, the ring size system employs numerical values ranging from 1 to 13, including half sizes. This system provides a precise measurement based on the circumference of the ring. The chart below illustrates the numerical values and their corresponding measurements.

4. EU Ring Size System

The EU Ring Size System is a standardized method used in Europe to determine the size of a ring. It is based on a numerical scale that corresponds to the inner circumference or diameter of the ring.

In the EU Ring Size System, ring sizes are typically measured in millimetres. The most common range of ring sizes starts from around 45mm to 69mm.

5. International Ring Size System

For international ring sizing, a numerical system based on millimetres or inches is often used. This system allows for a standardized approach that transcends country-specific variations.

To determine your international ring size, it is crucial to measure the inside circumference of your finger accurately. The following chart presents the most commonly used international ring sizes and their measurements.

UK Sizes

EU Sizes

USA Sizes

International Sizes

A

   

B

 

1

 

C

   

D

 

2

 

E

   

F

45

3

14.05 mm

G

46

 

14.45 mm

H

47

4

14.86 mm

I

48

 

15.27 mm

J

50

5

15.70 mm

K

51

 

16.10 mm

L

52

6

16.51 mm

M

53

 

16.92 mm

N

54

7

17.35 mm

O

56

 

17.75 mm

P

57

8

18.19 mm

Q

58

 

18.61 mm

R

59

 

19.02 mm

S

61

9

19.43 mm

T

62

 

19.84 mm

U

63

10

20.20 mm

V

64

 

20.68 mm

W

66

11

21.08 mm

X

67

 

21.49 mm

Y

68

12

21.89 mm

Z

69

 

22.33 mm

Currently, Alvin Gems provides Gemstone Rings in USA Sizes 6,7,8 & 9. You can easily Download a free Ring Size App on your Android or iOS device and check your ring size with ease. After that, simply browse our gemstone ring collection and order your favourite ring!