J Marcus Jewelers

J Marcus Jewelers is a custom jewelry business with locations in Katy and on Westheimer Road in Houston. Online, the shop's storefront centers on lab-grown diamond rings, bands, pendants and necklaces, but reviews describe a broader range of hands-on work happening at the counter. Customers mention having Rolex watches serviced — one reviewer wrote that their Rolex watches were "serviced and renewed with excellent results," while another had a bezel upgrade added to an inherited Rolex. Beyond watch work, reviewers describe custom ring design (including turning inherited stones into new settings), watch battery changes, ring cleaning, and jewelry made to mark occasions like Mother's Day. Staff members named in reviews — including Marcus, Chris, and Marc — are described as attentive and detail-oriented, particularly when working against a tight deadline, such as one customer's 30-day window to have a custom ring made before a wedding. Rolex is the only brand consistently and specifically named across this shop's reviews, giving confidence that Rolex servicing is a genuine part of its work, alongside general custom design and everyday jewelry repair. With two Houston-area locations, J Marcus Jewelers presents as a custom-design-first jeweler that also handles Rolex servicing, watch batteries, and routine jewelry repair for a mostly local, repeat clientele.