About Market Street Diamonds

Your Imagination. Our Creation

Our Art is our enterprise. Market Street Diamonds is a leader in producing and exporting the world’s most exquisite diamonds. Our hallmark proprietary cuts combined with an illustrious commitment to providing our wholesale and retail client's consistent perfection distinguishes Market Street Diamonds from all else.

Our Commitment to excellence begins and ends with our product. We purchase the best conflict-free diamond rough to see the process through its second metamorphosis — a brilliant, expertly cut masterpiece.

Our Belief is that a diamond’s value is derived from careful, manual artistry rather than a mass-produced commodity. Our hallmark proprietary cuts and unwavering attention to detail help us provide the best to our customers, ensuring their desire for luxury is always captivated in essence by Market Street Diamonds.

Our Team is a gracious union of diverse professionals who excelled in the jewelry industry. They speak many languages and offer a unique perspective to each design we make. We believe in synergy to inspire authentic creativity; that is why our custom designs are one of a kind.

Meet Our Team

Dino Lonzano

CEO & Lead Designer

As the CEO & lead designer of MSD, I'm driven by a lifelong passion for creating pieces that carry profound stories and enduring meaning. My journey began with my mother, Anna Isabella, a widowed immigrant who raised my brother and I on a modest $8,000 annual salary. Despite the challenges she faced, her unwavering strength and resilience remain etched in my heart. My earliest memories are of visiting the National Smithsonian as a five-year-old—moments where I watched my mother's eyes light up, finding rare joy and solace in the beauty of gemstones and masterful craftsmanship. Those hours spent marveling at the artistry of the Masters left an indelible mark on me and sparked a love for jewelry that would grow into my life's work. As a first-generation American and a proud Washingtonian, I am honored to create luxury pieces that become treasured family heirlooms for generations. I invite you to my studio to craft something truly special for someone dear to you. Let's create something unforgettable together!

Rayna

Rayna has been an integral part of MSD since February 2008, passionately helping couples design unique, meaningful pieces. She finds joy in balancing her work schedule with cherishing moments spent with her family.

Eva

GIA graduate gemologist (GG), Graduate Pearls (GP), Applied Jewelry Professional ( AJP), and Appraiser.

A GIA Graduate Gemologist with over 10 years of experience in the jewelry industry, Eva Lee brings a deep passion for the natural world and the stories it reveals through gemstones. To her, each gem is a window into Earth's history—a unique blend of beauty, science, and mystery. As both a gemologist and jewelry professional, she combines technical expertise with creative vision to craft pieces that are as meaningful as they are beautiful. Her work is driven by a commitment to authenticity, education, and the enduring wonder that nature inspires.

Stefano

Stefano joined Market Street Diamonds over a decade ago and recently stepped into the Creative Director role, shaping our visual identity and brand experience. With his background in design and narrative photography, he brings a fresh perspective to how we present our heritage craftsmanship. His creative vision spans from our showroom to our digital presence, creating a cohesive story that's both elegant and approachable..

Maylin

Maylin Carranza is an energetic and creative spirit who thrives on staying active and exploring new ideas. With a passion for thinking outside the box, Maylin loves diving into any kind of creative work, whether it's art, design, or innovative projects. A true adventurer at heart, she finds joy in traveling and discovering new places and cultures. Above all, Maylin values her friendships deeply, always striving to be a loyal and supportive friend to those lucky enough to be close to her.

Sydney

With a background in Jewelry Design from the Savannah College of Art and Design, Sydney has always had a passion for creating unique jewelry that is curated to her client's style. She loves staying up to date on the latest jewelry trends but is an old soul at heart, making her work a balance of timeless yet modern style. As a member of both our Sales Team and CAD Team, Sydney also helps each custom design come to life by printing 3D Wax Models for customers to visualize their ideas.

Liza

Liza is a soon-to-be psychology graduate from George Washington University, Class of 2026, with a sparkling passion for all things jewelry. Since joining the Market Street Diamonds team in 2024, she's brought her expertise and enthusiasm to every client experience. Whether it's the ethical elegance of a lab-grown diamond or the natural beauty of a mined one, she delights in helping couples discover their perfect piece—be it an engagement ring, wedding band, or a uniquely meaningful gift.

Harrison

Originally from Maryland’s Eastern Shore, I bring honesty, respect, strong family values, and a keen eye to every engagement. My journey in jewelry began with a summer job at the beach, where I discovered a deep passion for the craft. Over the years, I’ve expanded my skills to include drawing, watch repair and engraving, blending creativity with precision. I also hold a strong passion for gemstones, with the star sapphire being a personal favorite for its unique beauty and depth. Outside the studio, I find peace by the water and joy in sharing meals, as food is one of my favorite pleasures.

Why Choose Market Street Diamonds?

At Market Street Diamonds , you're not just buying jewelry — you're joining a 115-year legacy. As one of the few remaining full-service guild jewelers in the U.S., we design and craft every piece in-house at our Washington, D.C. boutique.

At Market Street Diamonds, you're not just buying jewelry — you're joining a 115-year legacy. As one of the few remaining full-service guild jewelers in the U.S., we design and craft every piece in-house at our Washington, D.C. boutique.

From concept to casting, we bring your vision to life with expert care and craftsmanship. In addition to jewelry, we value relationships, diversity, and giving back — supporting causes like Capitol Pride and Children's National Hospital.

Visit our West End showroom and discover jewelry that's designed with heart and tells your story.

"Your concept, our Expertise,
Together We Create!"

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