|
Columbia ISA home – ›
Search
Google SEARCH Columbia ISA Site
DIAMONDS Your Guide to Buying
How to find your ring size
How to determine ring size
How to Determine Your Ring Size
There are many factors that will affect ring size besides actual measurement around your finger.
1. Fingers are not perfectly round, yet most rings are.
2. The difference in size between finger joints and the place where a ring is to sit also affects the choice of ring size. Finger joints can be larger than the spot where the ring will sit and you have to be able to pass the ring over the joint before getting to the spot where it will reside.
3. Fingers change size in response to body chemistry and temperature, sometimes by several ring sizes and of course over time such as weight gain or loss.
For all of these reasons, the best determination of ring size will be obtained by going to a jeweler for a fitting. The size that is chosen is also affected by the specific ring. Wider rings and those in which a stone or setting projects toward the finger may require larger sizes than thinner rings, even for the same finger.
With that in mind, here is a method to help you determine your approximate ring size and a table showing the conversions between sizing used in several countries. If you look at sizing tables in publications or other web sites, you will notice that they may differ from each other by as much as a half ring size. It's not because the authors made math errors, but because there are multiple ways to evaluate ring sizes and they give slightly different results.
Ring sizes in the USA and Canada are also available in quarter sizes (e.g., 6-3/4, 8-1/2), so don't be afraid to ask a jeweler for these sizes if a half-size ring is almost, but not quite right.
DETERMINING YOUR RING SIZE
1. Cut a strip of paper about 5" long and about 1/4" wide.
2. Inspect the hand that will be wearing the ring. Find the widest part of the finger. Often, this will be at a joint, but it may be in a number of locations and may differ from hand to hand. You can use an old ring to help find the widest spot.
3. Wrap the paper strip around the widest part of the appropriate finger.
4. Use a pen or pencil to mark the point on the paper where the ends of the paper strip overlap (form a complete circle).
5. Use a good accurate quality ruler to measure the length from the outside end to the mark on the paper to the nearest 1/16" of an inch (decimal equivalents are given in the table) or millimeter, rounding up if necessary.
6. Find the closest measurement on the size chart to determine your ring size. Use millimeters for a more accurate size.
Ring Size Chart
Ring Size Comparison Chart
USA
Canada |
Measurement
mm/inches |
Britain |
France |
Germany |
Japan |
| 1 1/2 |
40.2 / 1.580 |
C |
40 1/2 |
12 3/4 |
--- |
| 2 |
41.5 / 1.634 |
D |
41 1/2 |
13 1/4 |
2 |
| 2 1/2 |
42.7 / 1.684 |
E |
42 3/4 |
13 3/4 |
3 |
| 3 |
44.0 / 1.739 |
F |
44 |
14 |
4 |
| 3 1/2 |
45.2 / 1.788 |
G |
45 1/4 |
14 1/2 |
--- |
| 4 |
46.5 / 1.836 |
H 1/2 |
46 1/2 |
15 |
7 |
| 4 1/2 |
47.8 / 1.888 |
I 1/2 |
47 3/4 |
15 1/4 |
8 |
| 5 |
49.0 / 1.941 |
J 1/2 |
49 |
15 3/4 |
9 |
| 5 1/2 |
50.2 / 1.992 |
L |
50 1/4 |
16 |
--- |
| 6 |
51.5 / 2.042 |
M |
51 1/2 |
161/2 |
12 |
| 6 1/2 |
52.8 / 2.092 |
N |
52 3/4 |
17 |
13 |
| 7 |
54.0 / 2.146 |
N 1/2 |
54 |
17 1/4 |
14 |
| 7 1/2 |
55.3 / 2.196 |
O 1/2 |
55 1/2 |
17 1/2 |
15 |
| 8 |
56.6 / 2.249 |
P 1/2 |
56 3/4 |
18 |
16 |
| 8 1/2 |
57.8 / 2.300 |
Q 1/2 |
58 |
18 1/2 |
17 |
| 9 |
59.1 / 2.350 |
R 1/2 |
59 1/4 |
19 |
18 |
| 9 1/2 |
60.3 / 2.400 |
S 1/2 |
60 1/2 |
19 1/2 |
19 |
| 10 |
61.6 / 2.463 |
T 1/2 |
61 3/4 |
20 |
20 |
| 10 1/2 |
62.8 / 2.504 |
U 1/2 |
62 3/4 |
20 1/4 |
22 |
| 11 |
64.1 / 2.567 |
V 1/2 |
64 1/4 |
20 3/4 |
23 |
| 11 1/2 |
66.0 / 2.608 |
W 1/2 |
66 |
21 |
24 |
| 12 |
67.3 / 2.658 |
Y |
67 1/4 |
21 3/4 |
25 |
• Diamonds Buying Guide
• Diamond Rings
|
|
| |