Size Guide
Choosing the perfect ring size is an essential part of the Hardy Brothers experience.
Our guide below will help you find the most accurate fit, ensuring comfort, elegance, and a seamless expression of luxury.
| Australian Size | Inside Circumference (mm) |
|---|---|
| H | 46.0 |
| H ½ | 46.6 |
| I | 47.2 |
| I ½ | 47.9 |
| J | 48.3 |
| J ½ | 49.3 |
| K | 49.6 |
| K ½ | 50.3 |
| L | 50.5 |
| L ½ | 51.5 |
| M | 51.8 |
| M ½ | 52.5 |
| N | 53.1 |
| N ½ | 53.8 |
| O | 54.5 |
| O ½ | 54.8 |
| P | 55.7 |
| P ½ | 56.4 |
| Q | 57.1 |
| Q ½ | 57.6 |
| R | 58.4 |
| R ½ | 59.1 |
For the most precise fit, we invite you to visit a Hardy Brothers boutique where our specialists will personally measure your finger and ensure your chosen piece is crafted to perfection.

Hardy Brothers uses standard Australian ring sizes.
| Australian Size | Inside Circumference(mm) |
| M 1/2 | 55.7 |
| N | 57.0 |
| N 1/2 | 58.3 |
| O | 59.6 |
| O 1/2 | 60.9 |
| P | 62.2 |
| P 1/2 | 63.5 |

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Subtract the case size of the timepiece from your wrist measurement
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Enquire about VAULT® 3.92 Carat Emerald and 0.47 Carat Diamond Signet Ring in 18ct Yellow Gold
Product Description
A refined expression of colour and form, this Vault® emerald and diamond ring showcases a rich rectangular-cut emerald, elevated in a classic claw setting that allows its deep green tone to radiate with clarity and poise. Crafted in 18ct yellow gold, the polished band provides a smooth, sculptural foundation, while fine round brilliant-cut diamonds along the shoulders introduce a restrained shimmer that enhances the emerald’s natural intensity.
Emeralds have captivated civilisations for millennia. The first known emerald mines were in Egypt, worked as early as 3500 BC and treasured by Cleopatra during her reign as Pharaoh. Centuries later, Colombian emeralds became renowned for their extraordinary colour after being discovered by Spanish New-World explorers in the 16th century.

































