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Make a bold and timeless statement with this classic 9ct yellow gold black onyx signet ring, designed for those who appreciate strong, elegant jewellery. Featuring a striking 12mm x 12mm square black onyx insert, this ring delivers a powerful contrast between the deep black gemstone and the rich warmth of polished yellow gold.
The ring showcases a traditional signet style with a strong square profile and a beautifully sculpted shoulder design that flows seamlessly into the band. The polished gold claws securely frame the onyx stone while adding a distinctive architectural detail to the ring.
Black onyx has long been associated with strength, protection, and confidence, making this piece not only a stylish accessory but also a meaningful one.
Crafted in solid 9ct yellow gold, this ring offers durability and timeless appeal, perfect for everyday wear or special occasions. Its bold square face makes it an ideal statement ring for men, while still maintaining the refined elegance expected from a classic signet design.
A versatile piece that works effortlessly with both formal and casual styles, this ring is a great addition to any jewellery collection or a thoughtful gift for a special occasion.
• Metal: Solid 9ct Yellow Gold
• Stone: Black Onyx Insert
• Stone Size: 12mm x 12mm Square
• Style: Classic Signet Ring
• Setting: Gold claw framed onyx insert
• Finish: High polish yellow gold
• Design: Sculpted split shoulder design
• Gender: Men's / Unisex statement ring
Free express shipping on New Zealand orders over $100, dispatched within 1–2 business days. Same-day Click & Collect is available from our Ōtāhuhu, Auckland showroom — choose Click & Collect at checkout.
Covered by the official manufacturer’s warranty against defects in materials and workmanship. Every item sold by Stonex Jewellers is 100% authentic and brand-new.
Use a ring that already fits or measure your finger to find the closest Stonex ring size.
| NZ / AU | US | Diameter (mm) | Circumference (mm) |
|---|---|---|---|
| F | 3 | 14.1 | 44.2 |
| G | 3½ | 14.5 | 45.5 |
| H | 4 | 14.9 | 46.8 |
| I | 4½ | 15.3 | 48.0 |
| J | 5 | 15.5 | 48.7 |
| K | 5½ | 15.9 | 50.0 |
| L | 6 | 16.3 | 51.2 |
| M | 6½ | 16.7 | 52.5 |
| N | 7 | 17.1 | 53.8 |
| O | 7½ | 17.5 | 55.1 |
| P | 8 | 17.9 | 56.3 |
| Q | 8½ | 18.3 | 57.6 |
| R | 9 | 18.8 | 58.9 |
| S | 9½ | 19.2 | 60.2 |
| T | 10 | 19.6 | 61.4 |
| U | 10½ | 20.0 | 62.7 |
| V | 11 | 20.4 | 64.0 |
| W | 11½ | 20.8 | 65.3 |
| X | 12 | 21.2 | 66.6 |
| Y | 12½ | 21.6 | 67.8 |
| Z | 13 | 22.0 | 69.1 |
| Z+1 | 13½ | 22.4 | 70.4 |
| Z+2 | 14 | 22.8 | 71.7 |
| Z+3 | 14½ | 23.2 | 72.9 |
| Z+4 | 15 | 23.6 | 74.2 |
| Z+5 | 15½ | 24.0 | 75.5 |
| Z+6 | 16 | 24.4 | 76.8 |
| Z+7 | 16½ | 24.8 | 78.0 |
This chart helps estimate fit. US sizes are the closest equivalent, and sizing can vary slightly with a ring’s width and design.
Band width: Wider bands can feel tighter than fine bands. If you are between sizes, you may need the next available size.
Need help choosing a size?
Contact the Stonex team or visit our Auckland showroom and we’ll help you find the right fit.
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