About Us
Marblehead Custom Jewelry creates handcrafted, one-of-a-kind pieces that reflect your story and style. Based in Marblehead, MA, we specialize in custom designs, heirloom restorations, and unique gemstone work—all with a focus on quality, detail, and personal service.
Because your jewelry should be as unforgettable as the moments it represents.
Our Team
Steven's approach is a comprehensive journey from the raw gem to the finished piece. He merges his award-winning lapidary skills with masterful metalsmithing to create jewelry that tells a complete story of transformation. His work honors the stone's origin while elevating it into wearable art of exceptional innovation and beauty.
Steven Tyler Manchini
Founder | Goldsmith | Expert Lapidarist
Ernie blends ornamental turning with geometric expressionism to create jewelry that feels both sculptural and alive. His work implements precision cutting and layered designs play with light, bringing out a bold harmony of symmetry and movement.
Ernest Thomas
Co-Owner | Goldsmith | Lapidarist
As the operational heart of Marblehead Custom Jewelry, Maria provides the foundational structure upon which artistry flourishes. Her background in biology and research informs a disciplined approach to managing the intricate details of the bespoke design process. This allows for an exceptional client experience, where every step is handled with precision, care, and clarity.
Maria Demos
Co-Owner | Director of Operations
As a Gemological Institute of America Graduate Gemologist, Graham is our resident connoisseur of rare gems and fine metals. He elevates the client experience by pairing his deep expertise with an approachable passion, offering trusted counsel from bespoke gemstone selection to expert appraisals. Graham ensures every interaction is as valuable and transparent as the materials themselves, making the world of fine jewelry accessible and exciting.
Graham Henderson
Graduate Gemologist | Appraiser
Our Story
The story of Marblehead Custom Jewelry began in a home studio in 2012, rooted in Steven Manchini’s dedication to the art of fine jewelry. This passion grew into a partnership with fellow artisan Ernie Thomas and, with the operational direction of Maria Demos, evolved into the vision for our Washington Street atelier. Our shared desire was to create a different kind of experience: a comfortable, alternative showroom where clients can relax and discuss their bespoke design directly with the jeweler. The addition of GIA Graduate Gemologist Graham Henderson completes our team, ensuring every client receives comprehensive, expert counsel from start to finish.
We invite you to our Washington Street showroom and studio to experience the dedication, artistry, and trust that define us. Your journey into the world of fine custom jewelry begins here.




