What makes Diamonds by Magnús James different?

Diamonds by Magnús James™ specializes in premium lab-grown diamonds that deliver exceptional brilliance, luxury craftsmanship, and unmatched value. All pieces are inspected, certified, and presented in signature DMJ packaging.

Are your diamonds real?

Yes. Our diamonds are 100% real, lab-grown diamonds with the exact same chemical, optical, and physical properties as mined diamonds. They test as real diamonds and follow standard GIA-equivalent grading criteria.

Do your diamonds come with certification?

Yes. All major Diamonds by Magnús James pieces include a certified grading report and a DMJ Certificate of Authenticity.

What metals do you use?

We use only solid 14k gold in white, yellow, and rose. We do not use plated, filled, or vermeil metals.

What is your return policy?

We offer 30-day free returns on unworn items in original condition. Custom, engraved, or made-to-order pieces are final sale.

Do you offer financing?

Yes. Customers can use Shop Pay Installments to split purchases into flexible payments at checkout.

How long does shipping take?

In-stock jewelry ships within 1–2 business days. Custom or special-order pieces typically ship within 5–10 business days depending on production time.

Do you offer warranties?

Yes. All Diamonds by Magnús James jewelry includes a lifetime manufacturing warranty that covers craftsmanship defects.

Can I custom-design a piece?

Yes. We offer custom design consultations for engagement rings, pendants, earrings, and other bespoke jewelry pieces.

The Promise Collection

The Promise Collection from Diamonds by Magnús James embodies the sacred commitments that form the foundation of lasting relationships. Inspired by the profound promises we make to those we love, each ring serves as a daily reminder of these heartfelt pledges.

Featuring exquisite engagement rings crafted for the discerning couple, every piece showcases lab-grown diamonds of exceptional VVS2 clarity and E color, ensuring extraordinary brilliance and ethical sourcing. The collection's name reflects not only the promise of marriage but also Magnús James' promise of uncompromising quality and conscious luxury.

Highlights of this refined collection include:

The Unity Ring: A symbolic design where interlocking bands represent two lives becoming one, set with a continuous line of premium lab-grown diamonds.
The Single Solitaire Ring: The timeless classic reimagined with Magnús James' distinctive touch—a stunning lab-grown diamond in a minimalist setting that maximizes light performance.
The Infinity Halo: An innovative floating halo design that creates the illusion of an endless circle of light around a center stone, symbolizing limitless love.
The Cascade: A graduated arrangement of stones that flow like water down the band, creating movement and capturing light from every angle.
The Constellation: A celestial-inspired setting where smaller diamonds orbit the main stone like stars, creating a galaxy of brilliance on the finger.

Each ring in The Promise Collection embodies meticulous craftsmanship and contemporary design sensibility while carrying deeper symbolic significance. The Unity Ring represents the merging of two lives, the Infinity Halo symbolizes boundless devotion, and each design tells its own story of commitment.

The collection's use of lab-grown diamonds honors another essential promise—the one we make to our planet and future generations. This conscious choice reflects the brand's belief that true luxury must be responsible luxury.

Available at select retailers and Diamonds by Magnús James boutiques, The Promise Collection offers the perfect symbol for couples whose love is built on meaningful promises and who value both extraordinary beauty and mindful creation.