Sell Gold, Repair Jewelry & More

Something Old…
Something New

From generation to generation, Oakland County families have known where to go to sell their gold, clean and repair their jewelry, and resize their rings. Their parents told them and their parents told them. Diamond Castle Jewelers is that jewelry store with a hometown feel you likely have grown up with as a part of the community, yet unparalleled global quality, standards, and creativity in design and craftsmanship.

If you’re looking for a new diamond ring to take your partner’s breath away, or are looking to give your old gold away, come our way. We’re here down the street for our friends and neighbors, just as we have been for more than a century.

Sell Gold, Diamonds &
Luxury Watches

If you are looking to sell your gold, Diamond Castle Jewelers in Novi, Michigan, and a newly opened second location in Plymouth, Michigan, can help. We buy diamonds, luxury watches, estate jewelry, and fine jewelry in any condition, turning your unwanted diamonds and jewelry into cash immediately. When you sell your gold or other jewelry, our experienced and GIA-trained staff of diamond and jewelry buyers will give you a fair and accurate offer for your unwanted jewelry items the first time around.

We use state-of-the-art equipment to ensure every diamond is precisely graded for clarity, color, cut, and carat weight according to GIA standards. This professional process only takes a few moments, and it allows our diamond and jewelry buyers to offer you the highest price possible.

In addition to buying diamonds and jewelry, we also buy luxury watches. Whether or not they are in working condition, we can assess the value of all luxury watches, such as Breitling, Patek Philippe, Rolex, Bulgari, and Cartier.

Repair & Cleaning

Diamond Castle Jewelers offers comprehensive repair services. Our jewelers can fix, adjust, or enhance wedding rings, earrings, bracelets, necklaces, pendants, and even watches, as our Rolex-certified watch technician has been repairing watches for more than 40 years.

We repair jewelry on-site, including replacing missing stones, repairing bent or damaged rings, and offering finishing touches to improve the appearance of aging jewelry.

The Diamond Castle Jewelers repair department has been a trusted staple in the Oakland County community for decades. Whether your item is platinum, gold, silver, or even costume jewelry, we can correct the problem.

Visit our Novi or Plymouth jewelry store for a complimentary jewelry inspection and cleaning!


Are you hoping to create a payment plan for the purchase of an engagement ring or gift? Financing options are available for those with approved credit! Apply for the Wells Fargo Jewelry Advantage Credit Card to see which options are available to you!