Celtic Knot Solitaire Lab Grown Diamond Engagement Ring 1.50ctw
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 Celtic Knot Solitaire Lab Grown Diamond Engagement Ring is a deeply meaningful design where ancient symbolism meets modern fine jewellery. A stunning 1.50ctw round lab grown center diamond is held in an elevated 6-prong setting above a gallery adorned with intricate Celtic / infinity knot shoulder details — interlocking loops that form timeless symbols of eternal love, unity and connection on each side of the setting, each housing a tiny accent lab grown diamond that adds a glimmer of hidden sparkle.
The Celtic knot has symbolised unbreakable bonds across millennia — its looping, endless form makes it one of the most powerful symbols of love to grace an engagement ring. The wide comfort-fit rounded shank supports the setting with warmth and wearability, its domed profile sitting beautifully against the finger. A ring for those who want their love story told in every detail.
Available in 10K/14K/18K White, Yellow, or Rose Gold and Platinum.
Ring Details
Item No. - R-DOC-131
Total Carat Weight - 1.50
Approx Gold Weight - 5.12g - 9.95g (Varies by metal type)
Setting Type - 6-Prong with Celtic Knot Shoulder Detail
Center Diamond Details
Stone Type - Lab Grown Diamond
Carat Weight - 1.50
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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