THE SIGNATURE ENGAGEMENT COLLECTION
Crafted to captivate, each Signature ring features a remarkable lab-grown diamond in exceptional sizes, set within sculptural, timeless designs.
Made for your story
At MiaDonna, we create elegant engagement rings and stunning fine jewelry with high-quality lab-grown diamonds. Beautiful statements made to last.
Stella McCartney in MiaDonna at the Met Gala
See Stella McCartney shining at the 2026 Met Gala in MiaDonna Lab-Grown Diamonds.
The Signature Collection
Introducing MiaDonna’s Signature Collection—vivid lab-grown diamonds set in modern, sculptural designs. Bold, brilliant, unforgettable.
For a limited time, enjoy FREE 4 ctw Certified Diamond Stud Earrings with every Signature Engagement Ring Purchase*.
EXCEPTIONAL VALUE EDIT
Discover a limited-time collection from MiaDonna, featuring timeless designs, signature craftsmanship, and unmatched value to make your moment shine.
VISIT OUR BOUTIQUE
Experience fine jewelry shopping at its finest in our flagship Portland, Oregon boutique.
Why Make It Miadonna
MiaDonna, the first in lab-grown diamonds, is B Corp certified and plants a tree with every order—where innovation meets purpose.
Trending Styles
Layla Round Lab Grown Diamond Vine Side Stone Engagement Ring
$ 1,940 (Setting Only)
Clio Oval Lab Grown Diamond Nature Inspired Side Stone Engagement Ring
$ 1,110 (Setting Only)
Clover Round Lab Grown Diamond Flower Petal Side Stone Engagement Ring
$ 1,270 (Setting Only)
Saffron Lab Grown Diamond Flower Side Stone Engagement Ring
$ 950 (Setting Only)
Diana Oval Lab Grown Diamond Vintage Halo Engagement Ring
$ 1,435 (Setting Only)
Explore the finest
lab-grown diamonds
Lab-grown diamonds offer the same beauty and brilliance as mined diamonds without the environmental cost. At MiaDonna, we create engagement rings using premium lab-created diamonds, designed with intention and built to last. Each piece reflects a modern approach to fine jewelry: elegant, meaningful, and made to celebrate life’s most important moments.
Yes, lab-grown diamonds are 100% real. MiaDonna’s lab-created diamonds are made of pure carbon, just like mined diamonds. They have the same optical, physical, and chemical properties, offering the same brilliance, hardness, and sparkle. Think of it like ice from a glacier versus ice from your freezer - different origins, same result. With lab-grown diamonds, you get all the beauty of a traditional diamond, crafted through modern innovation.
Absolutely. At MiaDonna, you can design a custom engagement ring that reflects your personal style and story. Start by choosing your favorite setting, metal, and lab-grown diamond or gemstone. From there, our team will help bring your vision to life making the process effortless, inspiring, and entirely your own. Whether you're designing solo or with a partner, you’ll end up with something truly one-of-a-kind.
Yes. Every MiaDonna piece comes with a Lifetime Guarantee that reflects our commitment to quality and craftsmanship. We guarantee that all jewelry is free from manufacturing defects in materials and workmanship at the time of delivery. And because our lab-grown diamonds are real diamonds, their brilliance, clarity, and structure will never fade or cloud over time. It's our promise that your ring will shine as beautifully in the years ahead as it does the day it arrives.
