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 4.00 CARAT MOZAMBIQUE RUBY AND 0.70 CARAT DIAMOND TRILOGY RING IN 18CT YELLOW AND WHITE GOLD
Details
| Vendor | Hardy Brothers Jewellers |
| Metal | 18ct Yellow and White Gold |
| Main Gemstone | Ruby |
Read more information regarding our Product Disclaimers.
Product Details
A masterpiece of timeless luxury, this Vault Trilogy Ring celebrates the allure of red rubies and the brilliance of fine diamonds. At its heart lies a magnificent 4.00 carat ruby, radiating a rich, vivid crimson hue — a symbol of passion and enduring elegance. Flanking the centre stone are two sparkling round brilliant diamonds, totalling 0.70 carats, that enhance the ruby’s fiery intensity with their captivating brilliance.
Perfectly balancing bold colour with refined craftsmanship, this ring is a striking statement of opulence and love — destined to be treasured for generations.



















