Custom Engagement Rings

Why Diamond Castle Jewelers?

Diamond Castle Jewelers has been a family-owned and operated jeweler since 1902, serving the Novi, Michigan community with fine jewelry, expert custom design, and on-site jewelry repair. Led by the Ansara family, we specialize in loose diamonds—most of which are GIA certified—and can help you find the perfect stone in any size, shape, and quality. Our highly qualified sales personnel and gemologists take pride in delivering high-quality craftsmanship, excellent value, and professional service, all wrapped in the welcoming, personal experience that has made us the local jeweler of choice for generations. From the moment you walk in the door, you'll see why so many of your friends and neighbors trust us with their most meaningful pieces.

Engagement rings are the heart of our business and we take pride in helping craft a ring that will represent your love story and last a lifetime. We have a large selection of engagement ring styles in stock at all times and can work with you to design a fully custom engagement ring as well.

Our 3D ring builder is the best of both worlds – you get to design a fully custom ring and we can have it ready for you in just a couple of weeks at a great price, fully customized around your center stone. Come visit our Novi showroom to design your custom engagement ring in person or start your journey online using our cutting-edge 3D Ring Builder. Once you have a design you like, schedule an appointment so we can discuss diamond options and finalize your design.