Round Bypass Swirl Cradle Split Shank Solitaire Lab Grown Diamond Engagement Ring 1.20ctw
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 Round Bypass Swirl Cradle Solitaire Lab Grown Diamond Engagement Ring reimagines the classic solitaire through the lens of graceful movement. A radiant 1.20ctw round lab grown center diamond rests within a signature bypass swirl cradle gallery, where a curved metal arm sweeps in a gentle arc beneath the stone, cradling it like a crescent moon. The asymmetric, flowing collar creates a sense of organic motion that makes the lab grown diamond appear to float above the band.
The split shank divides just below the setting, its two polished rails diverging outward and curving away on either side to reveal an open teardrop-shaped gap — a design detail that adds lightness and elegance to the profile. From the top view, the interplay between the bypass cradle and the split shank creates a beautifully balanced composition that is unlike any traditional solitaire. Graceful enough for everyday wear, distinctive enough to be unforgettable.
Available in 10K/14K/18K White, Yellow, or Rose Gold and Platinum.
Ring Details
Item No. - R-DOC-139
Total Carat Weight - 1.20
Approx Gold Weight - 2.99g - 5.81g (Varies by metal type)
Setting Type - 4-Prong Round Bead, Bypass Swirl Cradle Collar Gallery
Center Diamond Details
Stone Type - Lab Grown Diamond
Carat Weight - 1.20
Shape - Round
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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