Leonids
Melina | 3CT Oval Diamond Engagement Ring
$2,470.00
Unit price perDESCRIPTION
Melina is an oval lab diamond engagement ring with vintage-inspired detail, designed around a 3CT center stone, an elevated four-prong cathedral setting, double-row pavé shoulders, fine milgrain beading and a hidden halo beneath the crown.
From the side, the hidden halo adds an extra flash of light, while delicate claw prongs keep the oval diamond secure without overpowering its shape.
Ring Details
Center Stone Details
Gemstone: Lab-grown Diamond
Shape: Oval
Cut: Excellent
Average Color: Colorless (E)
Average Clarity: VS
Setting: Prong
Dimensions: 8.00 mm x 12.00 mm (3.00 ct)
Certificate: IGI Certification
Side Stone Details
Gemstone: Lab-grown Diamond
Shape: Round
Number: 28
Cut: Excellent
Average Color: Colorless (E)
Average Clarity: VS
Setting: Prong
Dimensions: 0.9mm(10pcs), 1.30mm(18pcs)
Have a custom request? Contact us at care@leonidsjewelry.com and we'll take care of every detail.
Center Stone Size Guide
Carat Weight Measurement
1 CT： 5.5 mm x 7.5 mm
2 CT： 7.0 mm x 10.0 mm
3 CT： 8.0 mm x 12.0 mm
Overall store ratings
Melina | 3CT Oval Diamond Engagement Ring
Cathedral Milgrain Pavé with Hidden Halo
$2,470.00
Unit price perMade to Order • Estimated Delivery by September 18
DESCRIPTION
Melina is an oval lab diamond engagement ring with vintage-inspired detail, designed around a 3CT center stone, an elevated four-prong cathedral setting, double-row pavé shoulders, fine milgrain beading and a hidden halo beneath the crown.
From the side, the hidden halo adds an extra flash of light, while delicate claw prongs keep the oval diamond secure without overpowering its shape.
Ring Details
Center Stone Details
Gemstone: Lab-grown Diamond
Shape: Oval
Cut: Excellent
Average Color: Colorless (E)
Average Clarity: VS
Setting: Prong
Dimensions: 8.00 mm x 12.00 mm (3.00 ct)
Certificate: IGI Certification
Side Stone Details
Gemstone: Lab-grown Diamond
Shape: Round
Number: 28
Cut: Excellent
Average Color: Colorless (E)
Average Clarity: VS
Setting: Prong
Dimensions: 0.9mm(10pcs), 1.30mm(18pcs)
Have a custom request? Contact us at care@leonidsjewelry.com and we'll take care of every detail.
Center Stone Size Guide
Carat Weight Measurement
1 CT： 5.5 mm x 7.5 mm
2 CT： 7.0 mm x 10.0 mm
3 CT： 8.0 mm x 12.0 mm
Leonids offers complimentary shipping domestically in the United States and internationally to many selected countries.
Most pieces are made to order: standard production takes 15 business days, with rush production available (ships 4-6 days sooner). Your estimated delivery date will reflect production time plus transit time, and tracking details will be sent as soon as your order ships. Learn More
We stand behind every piece we make. US orders can be returned within 30 days of delivery for a full refund — no restocking fees. Some conditions apply, including for customized items and international orders.Learn more
Every Leonids piece is designed to last. All orders come with a one-year warranty covering manufacturing defects — including loose prongs, loss of an accent stone, and plating discoloration. The main stone is not covered for loss or damage.
For rings, your first resizing is complimentary within the warranty period. Simply ship your ring to our U.S. after-sales address, or have it resized locally and we'll reimburse the cost — either way, your warranty stays intact.
This warranty does not cover damage from accidental impact, misuse, or normal wear and tear. Learn More
Choosing the right metal shapes both the look and the lifespan of your jewelry. Here's a quick breakdown to help you find your perfect match.
Solid Gold (10K, 14K & 18K)
Solid gold is gold all the way through, not just a surface finish. It's created by blending pure gold with other metals to achieve different balances of color, strength, and value — the karat number tells you how much pure gold is inside.
10K Gold — Practical Choice
Gold Purity: 41.7%. Our most durable gold option with a subtly warm tone. A great way to enjoy real gold at a more accessible price.
14K Gold — Most Popular 🔥
Gold Purity: 58.5%. The go-to choice for yellow and rose gold jewelry, offering the ideal balance of rich color, strength, and everyday durability.
18K Gold — Premium Choice
Gold Purity: 75%. A deeper, more luxurious gold tone with higher purity. Softer than 10K or 14K, so it's best suited for pieces worn with a little more care, and it's gentler on sensitive skin.
Platinum 🔥
Made from 95% pure platinum. Our top pick for silver-tone jewelry — naturally bright, exceptionally strong, hypoallergenic, and low-maintenance. Its density and durability make it the preferred choice for engagement and wedding rings meant to last a lifetime.
Sterling Silver
Made from 92.5% pure silver. An elegant, budget-friendly option with a bright, reflective shine. Ideal for occasional wear or layering pieces; with regular care, it stays beautiful for years.
$2,470.00
Unit price perOverall store ratings
Recently Viewed
The Leonids Standard
Factory Direct Value
With 20+ years of jewelry manufacturing experience, Leonids brings fine jewelry craftsmanship directly to you — without traditional retail markups.
Ethical & Exceptional Materials
Every Leonids piece is crafted with conflict-free D/E color, VVS clarity lab-grown diamonds and precious metals chosen for lasting beauty.
Made to Order Craftsmanship
Each piece is made to order by experienced artisans, then checked for stone security, alignment, finish, and overall craftsmanship before shipping.
Frequently Asked Questions
Diamonds you can live in.
- Choosing a selection results in a full page refresh.
- Opens in a new window.