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- Regular price
- $4,500.00
Regina Studs
- Regular price
- $4,500.00
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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Regina Studs
- Regular price
- $4,500.00
Regina Studs is a pair of round brilliant diamond solitaire stud earrings, handcrafted in our Byron Bay Hinterland atelier. A single diamond in each ear — your choice of 1.00ct, 1.50ct, 2.50ct total diamond weight — in lab-grown or natural D–E VVS diamonds.
Made to order by Australian goldsmiths in 9ct or 18ct yellow, white, or rose gold. Choose your diamond origin, carat, and metal to begin your piece.
Every Lucano piece is fully customisable. Contact us for a free consultation or a custom quote.
Why Regina Studs
- A regal, statement scale: a matched round brilliant diamond in each ear, 1.00ct, 1.50ct, 2.50ct total diamond weight.
- Lab-grown or natural: choose your diamond origin, graded to D-E colour, VVS clarity.
- Six metal options: 9ct or 18ct yellow, white, or rose gold.
- Handcrafted in Australia: made to order by atelier goldsmiths in the Byron Bay Hinterland, with responsibly sourced gold.
- Lifetime craftsmanship warranty: covers the workmanship of every Lucano piece for life. Free shipping Australia-wide.
Specs and details
- Stones: 2 × round brilliant diamond (one per ear), D-E colour, VVS clarity
- Total diamond weight: 1.00ct, 1.50ct, 2.50ct (your choice)
- Per stone: 0.30ct, 0.5ct, 1.00ct (half the pair total)
- Side stones 50 x 1.25mm total weight 0.40ct
- Certification: Each single diamond is over 0.30ct, so it is IGI-certified (lab-grown) or GIA-certified (natural).
- Diamond origin: lab-grown or natural
- Metal options: 9ct/18ct yellow, white, or rose gold
- Fitting: Post
- Lead time: hand-made to order, 4 to 8 weeks
- Origin: Byron Bay Hinterland, Australia
Frequently asked questions
How long does it take to make?
Hand-made to order in our Byron Bay Hinterland atelier by Australian goldsmiths, with lead times that typically run 4 to 8 weeks. Making each piece to order is part of our commitment to sustainability and quality — it minimises waste and lets us deliver the finest possible craftsmanship at the time of purchase. Free shipping Australia-wide once dispatched, with Lucano’s lifetime craftsmanship warranty.
Are lab grown diamonds as good as natural diamonds?
What does F VS mean in your diamond grading?
Where is Lucano jewellery made and how are your diamonds sourced?
What's the difference between 9ct, 18ct, and platinum settings?
How long does a Lucano hand-made piece take?
Shipping
- Free standard shipping Australia-wide on orders over $100 — every Lucano piece qualifies.
- Express shipping $15 AUD. International flat rate $50 USD.
- Delivery 2–7 business days within Australia, 1–3 by express, 3–10 internationally, once dispatched.
- Every parcel is fully tracked and insured to the full value of your order. A signature is required on delivery.
- Australian prices include GST. International customs duties and import taxes are payable by you and set by your local authority.
Returns
- Because each piece is handcrafted to order for one person, we don't accept returns or refunds for change of mind.
- Faulty or damaged pieces are always put right. Contact us with your order number and photos and we'll arrange a repair, replacement or refund.
- Changed your mind before dispatch? Email hello@lucano.com.au — if your piece hasn't entered production we'll do our best to cancel or amend.
- Every Lucano ring carries a lifetime craftsmanship warranty.
Full shipping policy and returns policy.