Cushion Hidden Halo Lab Grown Diamond Engagement Ring 3.51ctw
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 Cushion Hidden Halo Lab Grown Diamond Engagement Ring with Triple-Row Pavé Shank is a bold celebration of modern luxury. A breathtaking 2.85ctw cushion-cut lab grown center diamond commands attention in a 4-prong claw setting, elevated above a delicate hidden under-halo of pavé-set round lab grown diamonds that adds a secret ring of sparkle beneath the girdle — invisible from the top, magical from the side — for an impressive 3.51 total carat weight.
What truly sets this ring apart is the triple-row pavé shank: three continuous rows of round lab grown diamonds wrap the top and sides of the band from base to setting, creating an extraordinary river of light that makes the ring as dazzling from the side as it is face-on. The plain polished inner shank ensures comfortable all-day wear.
Available in 10K/14K/18K White, Yellow, or Rose Gold and Platinum.
Ring Details
Item No. - R-DOC-103
Total Carat Weight - 3.51
Approx Gold Weight - 3.05g - 5.92g (Varies by metal type)
Setting Type - Hidden Under-Halo with Triple-Row Pavé Shank
Center Diamond Details
Stone Type - Lab Grown Diamond
Carat Weight - 2.85
Shape - Cushion
Color - E-F
Clarity - VS1-VS2
Side Diamond Details
Stone Type - Lab Grown Diamond
Total Carat Weight - 0.66
Shape - Round lab grown diamonds (hidden under-halo + triple-row pavé shank)
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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