3 Carat Emerald Cut Diamond Engagement Ring - Lab Grown Diamond Set in Platinum
3 Carat Emerald Cut Diamond Engagement Ring - Lab Grown Diamond Set in Platinum
25 in stock
Checked twice — two trained eyes, one standard · Handcrafted in-house · Gift-ready packaging · Secure checkout · Questions? Contact us
Atelier services
Ancona Fine Jewelry — New York’s Diamond District
3 Carat Emerald Cut Diamond Engagement Ring - Lab Grown Diamond Set in Platinum
$1,700.00
https://anconajewelry.com/products/3-carat-emerald-cut-diamond-ring-lab-grown-diamond-igi-certified-set-in-platinum
Questions about fit or gifting? Contact Ancona.
Ring size guide
Find your size by inside diameter or circumference. To measure a ring you already wear, measure the inside diameter across the middle in millimetres, then match the row below.
| US size | Inside diameter | Circumference |
|---|---|---|
| 4 | 14.8 mm | 46.5 mm |
| 4½ | 15.3 mm | 48.0 mm |
| 5 | 15.7 mm | 49.3 mm |
| 5½ | 16.1 mm | 50.6 mm |
| 6 | 16.5 mm | 51.9 mm |
| 6½ | 16.9 mm | 53.1 mm |
| 7 | 17.3 mm | 54.4 mm |
| 7½ | 17.7 mm | 55.7 mm |
| 8 | 18.1 mm | 57.0 mm |
| 8½ | 18.5 mm | 58.3 mm |
| 9 | 18.9 mm | 59.5 mm |
| 9½ | 19.4 mm | 60.8 mm |
| 10 | 19.8 mm | 62.1 mm |
| 10½ | 20.2 mm | 63.4 mm |
| 11 | 20.6 mm | 64.6 mm |
| 11½ | 21.0 mm | 65.9 mm |
| 12 | 21.4 mm | 67.2 mm |
| 12½ | 21.8 mm | 68.5 mm |
| 13 | 22.2 mm | 69.7 mm |
Tip: wider bands can feel tighter — if a band is 6 mm or wider, consider going up a half size.
Illustrative sizing guidance only. Fit varies by design, width, wearer, and personal preference. Contact Ancona for help choosing.
This stunning 3.00 carat lab-grown diamond is set in platinum and boasts an excellent cut grade. The emerald-shaped stone is IGI certified and has a F color grade. The ring is handmade and features a prong setting style. The seller provides a warranty for this engagement ring, which is free-sized for ring sizes 4-8. The secondary stone is also a diamond and the metal purity is 950. This exquisite piece is perfect for those looking for a unique and high-quality engagement ring.
Guides & Sizing
Guides & Sizing
Not sure which length, karat, or stone? Start with our guides: the Chain Style Guide for silhouettes and lengths, the Gold Karat Guide for 10K vs 14K vs 18K, and the Diamond Grading Scale for cut, color, clarity, and carat. Questions about fit or gifting? Contact Ancona.
Jewelry Care
Jewelry Care
Store each piece separately in a soft pouch. Avoid contact with perfume, lotion, chlorine, and water. Wipe gently with a soft, dry cloth after wear.
Shipping & Returns
Shipping & Returns
Shipping options and costs are shown at checkout, and every order ships with tracking. Returns are accepted for items that arrive defective, damaged in transit, or incorrect — contact us within 48 hours of delivery. See our Return & Refund Policy and Shipping Policy.
About Ancona
About Ancona
Ancona Fine Jewelry is a twin-led studio in New York's Diamond District — two trained eyes at the bench, one shared standard. Chains and custom pieces are cast, assembled, and finished in-house in our own workshop.
Share
