Discover Your Ideal Fit
Finding the perfect fit is an essential part of your fine jewelry experience. Because precise measurements are critical for comfort and security, use our comprehensive sizing reference below to find your ideal fit across our collections.
Ring Sizing Chart
When measuring your finger at home, start by checking your measurements in millimeters against the diameter and circumference columns below, then reference your corresponding size across the UK, US, and European standards.
Inner Circumference(mm) | Inner Diameter (mm) | UK/AU/NZ | US/CA | EU | JP/HK/KR | IT/ES |
|---|---|---|---|---|---|---|
47 | 15 | H 1/2 | 4 | 47 | 7 | 6.75 |
48 | 15.3 | I 1/2 | 4.5 | 48 | 8 | 8 |
49 | 15.6 | J | 4.75 | 49 | 9 | 9 |
50 | 15.9 | J 1/2 | 5.25 | 50 | 10 | 10 |
51 | 16.2 | L | 5.75 | 51 | 11 | 11 |
52 | 16.6 | L 1/2 | 6 | 52 | 12 | 12 |
53 | 16.9 | M | 6.25 | 53 | 13 | 12.5 |
54 | 17.2 | N | 6.75 | 54 | 14 | 14 |
55 | 17.5 | O | 7.25 | 55 | 15 | 15 |
56 | 17.8 | P | 7.5 | 56 | 16 | 16 |
57 | 18.1 | P 1/2 | 8 | 57 | 17 | 17 |
58 | 18.5 | Q 1/2 | 8.5 | 58 | 18 | 18.5 |
59 | 18.8 | R | 8.75 | 59 | 19 | 19.5 |
60 | 19.1 | S | 9 | 60 | 20 | 20.25 |
61 | 19.4 | S 1/2 | 9.5 | 61 | 21 | 21 |
62 | 19.7 | T | 10 | 62 | 22 | 22.25 |
63 | 20.1 | U 1/2 | 10.25 | 63 | 23 | 23 |
How to Measure Your Ring Size at Home
If you do not know your ring size, you can easily determine it using a simple piece of string or a strip of paper:
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Wrap and Mark: Wrap a strip of paper or string comfortably around the base of your intended finger. Ensure it is snug, but not overly tight. Mark the point where the ends meet with a pen.
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Measure Length: Lay the paper or string flat against a ruler and measure the length in millimeters (mm) to find your finger's total circumference.
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Compare: Match your measurement directly to the Inside Circumference column in the chart above to determine your size. If your measurement falls between two sizes, we generally recommend selecting the larger size for optimal comfort.
Tips for an Accurate Fit
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Temperature Matters: Measure your fingers when your hands are at a normal body temperature. Fingers can contract in cold weather and swell in warm conditions.
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Knuckle Consideration: If your knuckle is significantly larger than the base of your finger, measure both your knuckle and the base, and choose a size that allows the ring to slide over the knuckle with gentle resistance.
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Band Width Considerations: Wider bands and heavier statement rings naturally fit tighter against the skin. We recommend going up half a size if you are purchasing a thick, wide band design.
Necklace Chain Length Reference
While rings require exact millimeter measurements, selecting the right necklace length depends on your preferred style and neckline:
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16 Inches (Choker / Collar Length): Rests closely around the base of the neck, pairing beautifully with V-necks and off-the-shoulder outfits.
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18 Inches (Princess Length): The most popular standard length, falling gracefully right on or just below the collarbone.
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20+ Inches (Matinee / Long Length): Hangs lower on the chest, ideal for layering or pairing with higher necklines.
Need Personal Assistance?
If you are unsure of your measurements or require professional guidance, please reach out to our customer care team via Email at support@sparojewels.com or via WhatsApp, and we will be delighted to assist you


Size Guide





