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Solid black square.

AUTHENTICITY GUARANTEED - at tns diamonds

Black screen

Text Us - ⁠⁠(215) 922-1501

Black, solid background.

Family owned - We care for our customers

Category Archives: Pre-owned watch

We Just Got In This Million-Dollar Voutilainen, and the Internet’s a Powerful Place

Close up of the exposed mechanical movement on the back of a Voutilainen watch, resting on a cloth with its brown leather strap visible.

Let me just tell you how this thing ended up in our hands. A couple weeks ago we posted a video about a Voutilainen we bought and sold, and it got a decent amount of views. Other collectors who own Voutilainens saw it, and some of them reached out. I was able to secure another […]

How Watch Consignment Works at TNS Diamonds

Wooden watch box with divided compartments holding several luxury watches including a Shinola, illustrating a watch consignment service.

What Consignment Actually Means Here When we consign a watch, we’re not buying it off you. You still own it. We authenticate it, photograph it, price it, list it, and negotiate with buyers on your behalf, and you get paid once it sells.   People assume consignment and trade-in are the same conversation. They’re not. […]

From Rolex to Cartier to AP — The Watches That Actually Move

Pre-owned Rolex Submariner steel watch resting on a pink surface, shown as the fastest-selling used luxury watch

In the pre-owned luxury watch market, not everything sells the same way. Some references move within hours of being listed. Others sit for weeks regardless of how competitive the price is. The difference rarely comes down to quality alone. It comes down to demand depth — how many buyers are actively looking for that specific […]

What to Expect When You Sell or Trade a Luxury Watch

Sell or trade luxury watch collection displayed in a black watch case, featuring multiple Daniel Wellington timepieces with rose gold mesh and leather bands under warm ambient lighting.

Most people who walk into TNS Diamonds to sell or trade a watch have never done it before. They know what they paid, they have a rough sense of what it’s worth, and they have questions they’re not always sure how to ask. The process is more straightforward than most people expect, but it helps […]

How to Authenticate an Audemars Piguet Royal Oak

Audemars Piguet Royal Oak chronograph with a blue dial, octagonal steel bezel, and gold screws, displayed on a white cushion in dramatic ambient lighting.

The Audemars Piguet Royal Oak is one of the few watches in the secondary market that commands genuine six-figure prices in steel. That kind of value creates an obvious counterfeiting incentive, and the replica market for the Royal Oak has become increasingly sophisticated over the past several years. Super-clones that once failed on obvious details […]

What Makes a Piece “Liquid” in the Luxury Market

Liquid luxury market display of two high-end watches on suede cushions, with Jaeger-LeCoultre, Vacheron Constantin, and Richard Mille brand materials in the background.

A full-set Rolex Submariner can sell within hours of being listed. A one-off designer bracelet of similar value can sit in a case for months. Both are fine pieces. One of them has far more people waiting to buy it.   Dealers call that liquidity. It’s how quickly you can sell something close to its […]

Why More Clients Are Requesting Luxury Watch and Jewelry Sourcing Services

Luxury watch and jewelry display featuring a gold chronograph watch

Finding the exact watch or piece of jewelry someone wants has become more complicated than it used to be. The days of walking into a boutique and browsing until something catches your eye still exist — but for anyone looking for something specific, that approach increasingly comes up short. Desirable pieces move fast, limited releases […]

How to Build a Long-Term Watch Collection in 2026

How to build a watch collection with luxury watches arranged on a table.

Starting a watch collection in 2026 makes sense for one simple reason: you can buy smarter than ever. Pricing data is easier to find, condition standards are more widely understood, and buyers are asking better questions. That is a good thing for long-term collectors because the best collections are built on patience and clarity, not […]

Entry-Level Luxury Watches That Hold Value: Best Starter Picks for 2026

Entry-Level Luxury Watches Close-Up Of TAG Heuer Aquaracer Automatic Dial

Entry-level luxury watches sit in the sweet spot where build quality, brand heritage, and everyday wearability meet a realistic budget. For 2026, this category typically falls in the $2,000–$7,000 range, especially when you shop strategically in the pre-owned market. Starting with entry level luxury watches is a smart move for first-time buyers. You’re not just […]

How Long Does a Jewelry Appraisal Take?

Magnified view of a circular metal component on a jeweler’s workbench, illustrating the detailed inspection process involved in determining how long does a jewelry appraisal take.

The time needed for a jewelry appraisal can range from minutes to several weeks. Simpler items can be evaluated in under an hour, while antique or complex collections may require days of research and documentation. In-person appointments typically run 30 to 60 minutes per item, with the written report arriving within a few days to […]

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