Discover the MILANJ Standard — Now in Lab Grown Diamonds

At MILANJ Diamonds, we believe fine jewelry should be as exceptional as the moments it represents—and that includes offering modern, ethical choices without compromising beauty or quality. That’s why we proudly offer a stunning collection of lab grown diamonds, hand-selected to meet the same rigorous standards we apply to all our diamonds.

Every diamond at MILANJ—natural or lab grown—is chosen with care by our expert gemologists to ensure it delivers lasting brilliance, elegance, and value. Whether you're seeking a timeless engagement ring or a meaningful gift, we are here to help you find the diamond that deserves you.

Personalized, Just Like Your Love Story

Whether you’re designing a custom engagement ring or browsing our curated collection, our team is here to guide you every step of the way. From classic solitaires to vintage-inspired designs and contemporary settings, MILANJ offers a full range of styles featuring both natural and lab grown diamonds.

Explore a variety of diamond shapes including round, cushion, emerald, oval, pear, marquise, and more. With hundreds of setting options and metal choices, you can create a piece that’s truly one of a kind.

Responsible Luxury

As part of our commitment to responsible craftsmanship, we continue to expand our sustainable offerings. Our lab grown diamonds represent a modern approach to luxury, blending advanced technology with timeless artistry. We are working to integrate recyclable packaging, carbon-conscious sourcing, and thoughtful materials—because we believe in jewelry that not only looks good, but feels right.

Start Your MILANJ Journey

With personalized service, expert guidance, and unparalleled selection, MILANJ Diamonds in King of Prussia is your trusted destination for both mined and lab grown diamonds. Whether you're planning a proposal, marking an anniversary, or celebrating yourself, let us help you find the perfect diamond for life’s biggest moments.

For brilliance you can feel good about—Make it MILANJ.

Free 30-Day Returns

We want you to love your MILANJ Diamonds purchase. That’s why we offer complimentary 30-day returns on eligible U.S. orders, including free return shipping via FedEx. If you're not fully satisfied, simply initiate your return within 30 days of the ship date.

All items must be returned in original, unworn condition with any accompanying documentation, including diamond certificates (a $100 replacement fee applies if missing). Items that have been engraved, resized, or altered by another jeweler cannot be returned.

Returns must be approved in advance and shipped within 7 days of receiving your return label. Returns without prior authorization or showing signs of wear will not be accepted.

Most eligible items are refunded to the original payment method. Special orders and custom designs may qualify for store credit only, as noted at the time of purchase.

To begin your return or for assistance, please contact our customer service team.

Free FedEx Shipping – Domestic & International

At MILANJ Diamonds, we’re pleased to offer complimentary FedEx shipping on all orders—both within the United States and internationally. Every order is shipped securely with signature confirmation required for added peace of mind.

• In-Stock items ship within 1–6 business days via FedEx 2Day® in the U.S. or FedEx International Economy (2–5 business days) abroad.
• Made-to-Order pieces take approximately 2 weeks to create before shipping via the same free services.
• Expedited U.S. delivery is available at checkout with FedEx Priority Overnight® (additional charges apply).

Once your item ships, you’ll receive an email with your FedEx tracking number. For your security, we do not ship to P.O. Boxes or change shipping addresses after an order is placed.

We proudly ship to many international destinations, including Canada, the UK, Germany, Australia, the UAE, and more—with duties and taxes included in your final price and free 30-day returns.

Wherever you are in the world, MILANJ Diamonds delivers your moment of brilliance—beautifully, securely, and on time.

MILANJ Price Match Guarantee

At MILANJ Diamonds, we are committed to offering you the most competitive prices on lab grown diamonds. If you find a comparable loose lab grown diamond from another U.S. retailer at a lower price, we’ll match it—guaranteed.

To qualify, the diamond must match ours in carat, cut, color, clarity, and shape, and be available for purchase on a public retail website (not a private seller or auction). Price Match applies to loose diamonds only, not finished or custom jewelry, as craftsmanship and materials vary between jewelers.

Simply email us with the link to the competitor’s diamond before you complete your purchase. Our team will verify the match within 1–2 business days and provide you with a custom discount code if approved.

At MILANJ, you get the best price, expert service, and the confidence of shopping with a trusted jeweler.