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 3.34 Carat Trilogy Diamond Engagement Ring in 18ct White Gold
Details
| Vendor | Hardy Brothers Jewellers |
| Metal | 18ct White Gold |
| Main Gemstone | Diamond |
| Main Gemstone Cut | Emerald Cut |
Read more information regarding our Product Disclaimers.
Product Details
Crafted in 18ct white gold, this trilogy engagement ring is a statement of timeless elegance and masterful design. At its heart lies a 3.04ct GIA-certified emerald cut diamond, boasting exceptional D colour and VS2 clarity.
Flanking the centre stone are two baguette cut diamonds with E-F colour and VS2 clarity, bringing the total carat weight to 3.34 carats. The upswept shoulders and elevated setting enhance brilliance from every angle, ensuring maximum light return and presence.
Handcrafted in our Brisbane workshop, this ring is a tribute to expert Australian craftsmanship — perfect for those seeking a bold, refined symbol of commitment.































