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Ethical Sourcing
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- Regular price
- $1,650.00
Marquisa Ring
- Regular price
- $1,650.00
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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Marquisa Ring
- Regular price
- $1,650.00
The Marquisa Ring is a marquise diamond promise ring handcrafted in our Northern Rivers studio. A delicate marquise-cut diamond accent set in ethical solid gold, available with either 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 delicate diamond rings? See the Baghetta Ring or the Eos Open Ring.
Why the Marquisa Ring
- Marquise diamond promise ring: a marquise-cut diamond accent set on a delicate band. 0.12ct total diamond weight. The marquise shape (also called navette) is elongated with pointed ends, commissioned originally by King Louis XV.
- 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
- Stone: marquise-cut diamond accent
- Total diamond weight: 0.12ct
- 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
What is a diamond promise ring?
A diamond promise ring is a smaller, more delicate ring given as a symbol of commitment, often before engagement. It uses smaller stones and a slimmer band than a traditional engagement ring. The Marquisa features a 0.12ct marquise diamond accent on a refined gold band.
Can I wear this as an engagement ring?
The Marquisa is designed as a promise ring with a delicate marquise diamond accent. For a centre-stone marquise engagement ring, see the Halo Lumina Marquise Solitaire (with a halo) or the Mira Marquise Pavé Solitaire (with a pavé band).
Natural or lab-grown?
Both options are offered. You can choose between natural and lab-grown diamonds at checkout.
How long does it take to make?
Each Marquisa 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 (available options):
- 0.08 ct
- 0.12 ct