MadDuckJewels RG2603 Oval Solitaire Engagement & Wedding Ring – 925 Sterling Silver – CZ / Moissanite / Lab-Grown Diamond – Rhodium Plated, Nickel-Free
MadDuckJewels RG2603 Oval Solitaire Engagement & Wedding Ring – 925 Sterling Silver – CZ / Moissanite / Lab-Grown Diamond – Rhodium Plated, Nickel-Free
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An oval engagement ring, unlike any other.
An oval center stone raised on a cathedral shank — lifted, full across the finger, quietly classic and easy to wear every day. #OvalSolitaire #CathedralSetting
Detail : Oval Solitaire on a cathedral shank. Oval center stone 7×5 mm (equivalent to roughly a 0.70 ct diamond), 4-prong setting, clean plain band.
For : Engagement ring / Wedding ring / Pre-wedding photo shoot / Special occasions / Everyday wear / A gift for a moment worth remembering.
Materials : Sterling Silver 925, rhodium plated | Nickel-Free — none of our pieces contain nickel.
Choose from 3 stone options:
◆ CZ (Cubic Zirconia)
⭐ Best Value
A popular synthetic stone, cut to MADDUCKJEWELS’ own specification
Bright, lively sparkle for a luxe look
The accessible choice, and our most-ordered.
◆ Moissanite
⭐ Most Popular
A high-quality lab-created gemstone, round brilliant cut
Exceptional brilliance and fire
High hardness, durable and easy to care for.
◆ Lab-Grown Diamond
⭐ Premium Choice
A 100% real diamond — chemically and physically identical to a mined diamond
- Color grade D–E–F (Colorless – Near Colorless)
- Clarity VVS–VS — eye-clean, no inclusions visible to the naked eye
- Round brilliant cut, precision faceted for maximum fire
Graded to the same standard as certified lab-grown diamonds — made to order, shipped fast, at a price that is far easier to reach.
Please note
CZ and Moissanite are synthetic gemstones — they are not diamonds.
Lab-Grown Diamond is a real diamond grown in a lab (identical in composition to a mined diamond).
Please select your stone type before checkout.
Ring Size Conversion (US – Thai Gold Size)
| US 3.0 | Gold Size 43.4 |
| US 3.5 | Gold Size 44.9 |
| US 4.0 | Gold Size 46.5 |
| US 4.5 | Gold Size 47.8 |
| US 5.0 | Gold Size 49.0 |
| US 5.5 | Gold Size 50.3 |
| US 6.0 | Gold Size 51.5 |
| US 6.5 | Gold Size 52.8 |
| US 7.0 | Gold Size 54.0 |
| US 7.5 | Gold Size 55.3 |
| US 8.0 | Gold Size 56.6 |
| US 8.5 | Gold Size 57.8 |
| US 9.0 | Gold Size 59.1 |
| US 9.5 | Gold Size 60.5 |
| US 10.0 | Gold Size 62.2 |
| US 10.5 | Gold Size 63.1 |
| US 11.0 | Gold Size 64.3 |
| US 11.5 | Gold Size 65.7 |
| US 12.0 | Gold Size 66.9 |
| US 12.5 | Gold Size 68.5 |
| US 13.0 | Gold Size 70.1 |
How to find your size (most to least accurate):
1. Get measured at a jewelry store
2. Measure the inner diameter of a ring you already own
3. Measure the circumference of your finger
** MADDUCKJEWELS uses the same standard sizing as gold & jewelry shops.
Warranty:
- One free re-polish and rhodium re-plating per ring
- Lifetime stone-setting warranty — loose or wobbly stones re-tightened free of charge (if a stone is already lost, setting labor is free and you pay only the actual cost of the stone)
- Free stone cleaning, anytime
Ring Resizing:
💍 Doesn’t fit? One free resize! Notify us and send the ring back within 7 days of delivery (ring in perfect condition, no scratches / up to 4 step sizes / return shipping 55 THB / takes 3–5 business days)
*After 7 days, or if the ring shows signs of wear: 250 THB per ring
*Engraved rings: 250 THB per ring (re-engraving the original text is free)
💎 Madduck Upgrade Program
Turn your old ring into credit 💰
Trade in your original Madduck ring for instant credit toward a new one.
💍 CZ → 500.-
💎 Moissanite → 1,000.-
✨ Lab-Grown Diamond → 2,000–4,000.-
Buying today isn’t the end — every ring keeps its upgrade value for life.
📩 Message us a photo of your old ring for an instant credit quote.
*Terms and conditions apply.
