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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Enquire about VAULT® 15.69 CARAT ASSCHER CUT TOURMALINE AND 4.26 CARAT DIAMOND HALO RING IN 18CT WHITE GOLD
Product Description
Embodying a delicate warmth and luminous presence, this Vault® ring centres a substantial 15.69ct Mozambique peach tourmaline, its soft sunset tones elevated by a polished 18ct white gold halo that frames the stone with refined brilliance. The surrounding round brilliant and oval cut diamonds accentuate the tourmaline’s gentle, evocative colour, their crisp sparkle enhancing every facet without overpowering its natural charm. Mozambique tourmaline is treasured for its exceptional clarity and the subtle warmth of its hue, drawing the eye with a serene glow that feels both modern and timeless. Crafted with meticulous attention to proportion and finish, this piece exemplifies the Vault® collection’s pursuit of extraordinary gemstones, celebrating the harmony of colour, light and craftsmanship in a design meant to be cherished.




























