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Outstanding Craftsmanship
Experienced Artisans -
Expert Gemmologist
Sourcing and Quality Control -
Lifetime Warranty
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Ethical Sourcing
Curated Partners
You need to choose options for product.
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- Regular price
- $1,700.00
Bound Ring
- Regular price
- $1,700.00
Find Your Perfect Fit
A guide to accurate ring sizing and diamond proportions.
1. Ring Size Conversion Chart
We use the standard Australian/UK (Alphabetical) sizing system. Use the table below to find your match based on your diameter or circumference.
| Inside Diameter (mm) | Inside Circumference (mm) | AU / UK Size | US / Canada Size |
|---|---|---|---|
| 14.1 mm | 44.2 mm | F | 3 |
| 14.9 mm | 46.8 mm | H | 4 |
| 15.7 mm | 49.3 mm | J ½ | 5 |
| 16.5 mm | 51.9 mm | L ½ | 6 |
| 17.3 mm | 54.4 mm | N ½ | 7 |
| 18.1 mm | 57.0 mm | P ½ | 8 |
| 18.9 mm | 59.5 mm | R ½ | 9 |
Includes printable ruler and physical sizing circles.
2. Stone Size: mm vs. Carat Weight
Diamond carat weight measures mass, while millimeter (mm) measures physical dimensions. Use this as a visual reference for Round Brilliant cut stones.
| Carat Weight (ct) | Round Diameter (mm) | Style Guide |
|---|---|---|
| 0.25 ct | 4.1 mm | Subtle & Minimalist |
| 0.50 ct | 5.2 mm | The Classic Choice |
| 1.00 ct | 6.5 mm | Timeless Brilliance |
| 1.50 ct | 7.4 mm | Commanding Presence |
| 2.00 ct | 8.1 mm | Luxury Statement |
Professional Measurement Tips
Temperature: Fingers shrink in the cold and swell in the heat. Measure at the end of the day when your hands are warm.
Band Width: Wider bands feel tighter on the finger. If you are choosing a wide eternity band, we recommend ordering one half-size larger.
Between Sizes: If you fall between two sizes, always opt for the larger size to ensure a comfortable fit.
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Bound Ring
- Regular price
- $1,700.00
The Bound Ring is a diamond wedding band handcrafted in our Northern Rivers studio. A polished gold band set with 0.21ct of round brilliant diamonds, in your choice of natural or lab-grown diamonds.
Made to order by Australian goldsmiths using gold sourced exclusively from ABC Refinery, Australia's only independent refiner with simultaneous LBMA, SGE, and CME COMEX accreditation. Looking at related diamond wedding bands? See the Brio Ring or the Bloom Ring.
Why the Bound Ring
- Diamond wedding band: 0.21ct total diamond weight in F VS quality, set in ethical solid gold.
- Natural or lab-grown: available with either natural or lab-grown diamonds.
- Ethical gold sourcing: sourced from ABC Refinery, Australia's only independent refiner with LBMA, SGE, and CME COMEX accreditation.
- Italian goldsmith heritage: our founder is a member of the Università degli Orefici (est. 1508, Rome), bringing 500 years of Italian goldsmithing tradition to each piece.
- Lifetime craftsmanship warranty: covers the workmanship of every Lucano ring for life. Free shipping Australia-wide.
Specs and details
- Total diamond weight: 0.21ct, F VS
- Metal: ethical solid gold
- Origin: Northern Rivers studio, Australia, hand-made to order
- Gold sourcing: ABC Refinery (LBMA, SGE, CME COMEX accredited)
- Lead time: 4 to 6 weeks
Frequently asked questions
Is the Bound Ring a wedding band or eternity ring?
The Bound Ring is positioned as a diamond wedding band with 0.21ct of diamonds. It can be worn alone as a wedding band, as an anniversary ring, or stacked alongside a Lucano engagement ring.
Natural or lab-grown?
Both options are offered. You can choose between natural and lab-grown diamonds at checkout.
How is the gold sourced?
Gold is sourced exclusively from ABC Refinery, Australia's only independent refiner with simultaneous accreditation from the London Bullion Market Association (LBMA), Shanghai Gold Exchange (SGE), and CME Group COMEX.
How long does it take to make?
Each Bound Ring is hand-made to order in our Northern Rivers studio. Lead times typically run 4 to 6 weeks. Free shipping Australia-wide once dispatched, with Lucano's lifetime craftsmanship warranty.
Total Diamond Weight: 0.21 ct