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Ring Sizing
A ring being sized at S.E. Needham Jewelers will first be cleaned of any dirt or oils in an ultrasonic followed by steam cleaning. The bottom, or shank, of the ring is then cut and filed smooth. To size a ring up, the shank is slightly opened to insert a piece of metal (gold, silver, or platinum) of the same size which is then soldered in place. To size a ring down, a small piece of metal is cut from the shank after which the shank is soldered back together. Our goldsmiths then file and sand the joints to smooth the ring to the original state. This is all finished with polishing and cleaning, as well as rhodium plating for white gold rings, and a two point inspection to check stones to make sure they are secure. The price of sizing varies depending on sizing up or down, the width of the ring, and the total number of stones in the ring.
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United States and Canada Ring Size | Diameter in Inches | Diameter in Millimeters | Great Britain and Australia | France | Germany | Japan | Switzerland | ||||||||
1 | 0.487 | 12.37 | B | --- | --- | 1 | --- | ||||||||
1 1/4 | 0.495 | 12.573 | B-1/2 | --- | --- | --- | --- | ||||||||
1 1/2 | 0.503 | 12.776 | C | --- | --- | --- | --- | ||||||||
1 3/4 | 0.511 | 12.979 | C-1/2 | --- | --- | --- | --- | ||||||||
2 | 0.52 | 13.208 | D | 41 1/2 | 13 1/4 | 2 | 1 1/2 | ||||||||
2 1/4 | 0.528 | 13.411 | D-1/2 | 42 1/8 | 13 1/2 | --- | --- | ||||||||
2 1/2 | 0.536 | 13.614 | E | 42 3/4 | 13 3/4 | 3 | 2 3/4 | ||||||||
2 3/8 | 0.544 | 13.818 | E- 1/2 | 43 3/8 | --- | --- | 3 3/8 | ||||||||
3 | 0.553 | 14.046 | F | 44 | 14 | 4 | 4 | ||||||||
3 1/4 | 0.561 | 14.249 | F-1/2 | 44 5/8 | 14 1/4 | --- | 4 5/8 | ||||||||
3 1/2 | 0.569 | 14.453 | G | 45 1/4 | 14 1/2 | 5 | 5 1/4 | ||||||||
3 3/4 | 0.577 | 14.656 | G-1/2 | 45 7/8 | 14 3/4 | 6 | 5 7/8 | ||||||||
4 | 0.586 | 14.884 | H-1/2 | 46 1/2 | 15 | 7 | 6 1/2 | ||||||||
4 1/4 | 0.594 | 15.088 | I | 47 1/8 | 15 1/4 | --- | 7 1/8 | ||||||||
4 1/2 | 0.602 | 15.291 | I-1/2 | 47 3/4 | 15 1/2 | 8 | 7 3/4 | ||||||||
4 3/4 | 0.61 | 15.494 | J | 48 3/8 | --- | --- | 8 3/8 | ||||||||
5 | 0.619 | 15.723 | J-1/2 | 49 | 15 3/4 | 9 | 9 | ||||||||
5 1/4 | 0.627 | 15.926 | K | 49 5/8 | 16 | --- | 9 5/8 | ||||||||
5 1/2 | 0.635 | 16.129 | K-1/2 | 50 1/4 | 16 1/4 | 10 | 10 1/4 | ||||||||
5 3/4 | 0.643 | 16.332 | L | 50 7/8 | --- | 11 | 10 7/8 | ||||||||
6 | 0.652 | 16.561 | L-1/2 | 51 1/2 | 16 1/2 | 12 | 11 1/2 | ||||||||
6 1/4 | 0.66 | 16.764 | M | 52 1/8 | 16 3/4 | --- | 12 1/8 | ||||||||
6 1/2 | 0.668 | 16.967 | M-1/2 | 52 3/4 | 17 | 13 | 12 3/4 | ||||||||
6 3/4 | 0.676 | 17.17 | N | 53 3/8 | --- | --- | 13 3/8 | ||||||||
7 | 0.685 | 17.399 | O | 54 | 17 1/4 | 14 | 14 | ||||||||
7 1/4 | 0.693 | 17.602 | O-1/2 | 54 5/8 | 17 1/2 | --- | 14 5/8 | ||||||||
7 1/2 | 0.701 | 17.805 | P | 55 1/4 | 17 3/4 | 15 | 15 1/4 | ||||||||
7 3/4 | 0.709 | 18.009 | P-1/2 | 55 7/8 | --- | --- | 15 7/8 | ||||||||
8 | 0.717 | 18.212 | Q | 56 1/2 | 18 | 16 | 16 1/2 | ||||||||
8 1/4 | 0.726 | 18.44 | Q-1/2 | 57 1/8 | 18 1/4 | --- | 17 1/8 | ||||||||
8 1/2 | 0.734 | 18.644 | R | 57 3/4 | 18 1/2 | 17 | 17 3/4 | ||||||||
8 3/4 | 0.742 | 18.847 | R-1/2 | 58 3/8 | 18 3/4 | --- | 18 3/8 | ||||||||
9 | 0.75 | 19.05 | S | 59 | 19 | 18 | 19 | ||||||||
9 1/4 | 0.759 | 19.279 | S-1/2 | 59 5/8 | 19 1/4 | --- | 19 5/8 | ||||||||
9 1/2 | 0.767 | 19.482 | --- | 60 1/4 | 19 1/2 | 19 | 20 1/4 | ||||||||
9 3/4 | 0.775 | 19.685 | T | 60 7/8 | 19 3/4 | --- | 20 7/8 | ||||||||
10 | 0.783 | 19.888 | T-1/2 | 61 1/2 | 20 | 20 | 21 1/2 | ||||||||
10 1/4 | 0.792 | 20.117 | U | 62 1/8 | 20 1/4 | 21 | 22 1/8 | ||||||||
10 1/2 | 0.8 | 20.32 | U-1/2 | 62 3/4 | 20 1/2 | 22 | 22 3/4 | ||||||||
10 3/4 | 0.808 | 20.523 | V | 63 3/8 | --- | --- | 23 3/8 | ||||||||
11 | 0.816 | 20.726 | V-1/2 | 64 | 20 3/4 | 23 | 24 | ||||||||
11 1/4 | 0.825 | 20.955 | W | 64 5/8 | --- | --- | 24 5/8 | ||||||||
11 1/2 | 0.833 | 21.158 | W-1/2 | 65 1/4 | 21 | 24 | 25 1/4 | ||||||||
11 3/4 | 0.841 | 21.361 | X | 65 7/8 | --- | --- | 25 7/8 | ||||||||
12 | 0.849 | 21.565 | Y | 66 1/2 | 21 1/4 | 25 | 26 1/2 | ||||||||
12 1/4 | 0.858 | 21.793 | Y-1/2 | 67 1/8 | 21 1/2 | --- | 27 1/8 | ||||||||
12 1/2 | 0.866 | 21.996 | Z | 67 3/4 | 21 3/4 | 26 | 27 3/4 | ||||||||
12 3/4 | 0.874 | 22.2 | Z-1/2 | 68 3/8 | --- | --- | 28 3/8 | ||||||||
13 | 0.882 | 22.403 | --- | 69 | 22 | 27 | 29 |