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John Hardy Classic Chain Ring – Knife Edge in Silver with 13x22MM Rutilated Quartz & Diamonds – Size 8
John Hardy’s iconic Classic Chain takes on its sleekest form in our graphic Knife Edge reiteration. Unique in appearance and mystical in meaning, illuminating Rutilated Quartz sits at the center of the signature diamond pave. Handcrafted in sterling silver, this ring is just as eye-catching as it is energy-induing.
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John Hardy Ring Size Guide
Ring sizes are based on the circumference of your finger. Measure first, then match your measurement to the chart below.
Size chart
| US · Canada | UK · Australia | Finger circumference (cm) | Finger circumference | Finger circumference (mm) | Size on this site |
|---|---|---|---|---|---|
| 5 | J ½ | 4.93 | 4.93 | 49.3 | 5" |
| 6 | M | 5.18 | 5.18 | 51.8 | 6" |
| 7 | O | 5.44 | 5.44 | 54.4 | 7" |
| 8 | Q | 5.69 | 5.69 | 56.9 | 8" |
| 9 | S | 5.94 | 5.94 | 59.4 | 9" |
| 10 | T ½ | 6.20 | 6.20 | 62.0 | 10" |
| 11 | V ½ | 6.45 | 6.45 | 64.5 | 11" |
| 12 | Y | 6.73 | 6.73 | 67.3 | |
How to measure your finger
Make sure the string is pulled snug (the tighter the better) to find your best fit.

With a pen or your other hand, mark where the string meets. Make sure it is pulled snug.

Lay your string against a ruler and measure the length (cm). This number is your finger circumference. Compare it to our size chart to find which size is right for you.













