Vintage Three Stone Princess Lab Grown Diamond Engagement Ring 2.25ctw
All Runivi rings are sized in US sizing. Sizes highlighted are the most commonly ordered (US 6–7½).
| US Size | Diameter (mm) | Circumference (mm) |
|---|---|---|
| 4 | 14.9 | 46.8 |
| 4½ | 15.3 | 48.0 |
| 5 | 15.7 | 49.3 |
| 5½ | 16.1 | 50.6 |
| 6 | 16.5 | 51.9 |
| 6½ | 16.9 | 53.1 |
| 7 | 17.3 | 54.4 |
| 7½ | 17.7 | 55.7 |
| 8 | 18.1 | 57.0 |
| 8½ | 18.5 | 58.3 |
| 9 | 18.9 | 59.5 |
| 9½ | 19.4 | 60.8 |
| 10 | 19.8 | 62.1 |
| 10½ | 20.2 | 63.4 |
| 11 | 20.6 | 64.7 |
| 11½ | 21.0 | 66.0 |
| 12 | 21.4 | 67.2 |
| 13 | 22.2 | 69.8 |
✔ Most commonly ordered: US 6, 6½, 7, 7½
Quick Tips
- Measure at the end of the day, when fingers are largest.
- Snug, not tight — the ring should pass your knuckle with slight resistance.
- Wider bands (4mm+) fit tighter — consider sizing up half a size.
- Between two sizes? Always size up.
- In stock, ready to ship
Our Vintage Three Stone Princess Lab Grown Diamond Engagement Ring is a timeless trilogy design with a beautifully distinctive vintage soul. Three princess-cut lab grown diamonds — a 0.75ctw center flanked by two equally matched 0.75ctw side stones — sit side by side in shared 4-prong bead settings, creating a bold horizontal line of geometric sparkle for a striking 2.25 total carat weight.
The three princess cuts are perfectly unified in their square geometry, their clean faceting working in harmony to reflect light across the full width of the setting. The wide, flat-topped shank is adorned with a precise herringbone/chevron geometric engraving covering the entire face of the band — an intricate and distinguished detail fully revealed from the side. Fine milgrain beading runs along both edges of the band for the full circumference, completing a thoroughly vintage-inspired design.
Available in 10K/14K/18K White, Yellow, or Rose Gold and Platinum.
Ring Details
Item No. - R-DOC-115
Total Carat Weight - 2.25
Approx Gold Weight - 5.98g - 11.62g (Varies by metal type)
Setting Type - 3-Stone Princess Trilogy with Shared Prong Bead Setting
Center Diamond Details
Stone Type - Lab Grown Diamond
Carat Weight - 0.75
Shape - Princess
Color - E-F
Clarity - VS1-VS2
Side Diamond Details
Stone Type - Lab Grown Diamond
Total Carat Weight - 1.50
Shape - 2 princess-cut lab grown diamonds (0.75ctw each)
Color - E-F
Clarity - VS1-VS2
Your Order Includes
* Free Shipping
* Delivered in Discreet Packaging
* Complimentary Professional Appraisal & IGI Certificate (if applicable)
* Free Lifetime Warranty
Every RUNIVI item is custom-made after your order is placed. We offer free and fully-insured shipping on all orders within US and Canada. Estimated delivery time is 10-12 business days from the date of your purchase.
If you are not 100% satisfied with your purchase, returns are accepted within 30 days of delivery. Learn more about our shipping & return policy.
Why Shop with us
Lifetime Warranty
IGI & Appraisal Certificate
Free Resizing & Shipping
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