AUTHENTICITY GUARANTEED - at tns diamonds
Text Us - (215) 922-1501
Family owned - We care for our customers
Discover one-of-a-kind timepieces and sell yours in minutes— fast, trusted, and always authentic.
Stockist of the biggest Luxury Brands
Our content goes beyond inventory. On our social channels we share stories behind our watches, insights from a luxury dealer, and deep dives into the pieces collectors love most.
From Rolex to Cartier to AP, these are our fastest moving pieces. Trusted by collectors, worn by trendsetters, and selling quick.
Explore our curated selection of luxury jewelry including gold chains, designer rings, and timeless diamond pieces.
Text us a photo and we’ll get back to you fast — no pressure, no
bots, just real people who know the value of what you’ve got.
We discreetly buy your luxury items — no serials or seller info is ever disclosed. Our in-house team professionally photographs and markets your piece online and in our boutique.
Trade your timepiece or jewelry with full confidentiality. Each exchange is managed with care and precision by our in-house specialists.
We restore and service luxury items with expert craftsmanship, using bespoke techniques to preserve their original beauty and integrity.
TNS Diamonds is a trusted family-run business located in the heart of Philadelphia’s historic Jeweler’s Row. With decades of experience, we specialize in luxury Swiss watches, fine jewelry, and high-quality diamonds — all photographed and sold exactly as shown.
Our expert watch technicians and in-house jewelers provide fast, hands-on service, including repairs, custom jewelry projects, and engagement ring design. If we don’t have it in stock, we’ll source it — and if you’re ready to sell or trade, we’ll make it easy.
If we don’t stock it, we can locate it!
Explore our blog for buying guides, watch care tips, and behind-the-scenes looks at the luxury watch and jewelry world. Whether you’re a first-time buyer or a seasoned collector, our articles are here to help you stay informed.
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