Assay Jewelry

10/09/2026

Four luxury timepieces. Four unique expressions of gold. ✨

From Piaget's diamond-set elegance to Harry Winston's bold chronograph and Tiffany & Co.'s iconic Atlas design, each watch brings its own character and craftsmanship.

Item numbers and details in order:

1. 6137 - Piaget Dancer 125th Anniversary Limited Edition Diamond 18K Gold Watch

2. POTC2633W - Harry Winston Premier Chronograph 18K Yellow Gold Navy Dial Men's Luxury Watch

3. 8230 - Tiffany & Co. Atlas 18K Gold 31mm Cream Dial Quartz 3-Row Bracelet Watch

4. 6062 - Piaget Dancer Opal Dial 18K Gold Ref. 90563 Quartz 23.5mm Watch

Which gold timepiece catches your eye first?

Comment 1, 2, 3, or 4 below.

DM us the item number for more details.

10/07/2026

10/02/2026

22K gold bolo tie with a little Western history.

This unusual piece features a Lady Liberty gold coin at the center, with two natural gold nuggets dangling below.

Bolo ties are worn this way, and this one is certainly not an everyday example.

One for collectors who like their jewellery a little different.

SKU - POTC2105P

10/01/2026

The detail 99% of people scroll right past.

Look just under the Rolex signature, that’s Tiffany & Co. For decades, Tiffany was an authorized Rolex retailer, and select pieces sold through their stores were double-signed with both names on the dial.

This one’s been freshly serviced by Rolex, comes with Rolex service papers, and is still under Rolex warranty.

If you know, you know.

SKU - POTC2578W

09/29/2026

This one might stir the pot….The Top 3 Sapphire Colors, Ranked By Price (not rarity)

These are based on auction results.

Color is one of the biggest factors in determining a sapphire’s value. Rarity, saturation, tone, origin, and treatment all play a role. The better the color, combined with strong clarity, desirable origin, and little or no treatment, the rarer the stone becomes.

Item numbers:
- Royal blue: SKU - GA0544

- Padparadscha: SKU - GA2175

- Vivid Pink: SKU - GA1849

09/25/2026

Are diamonds actually rare?

That’s for a separate video. But rare diamonds…are rare.

09/25/2026

Not every Patek was sold the same way.

Long before boutiques, Patek Philippe worked with a small circle of trusted retailers worldwide, and Gubelin was one of the most storied, with ties to the brand going back over 170 years. Double-signed dials like this are a quiet piece of that history, and it’s not something you’ll find on new pieces.

A detail worth knowing before you walk past it.

SKU - POTC2655W

09/18/2026

$200,000 for a museum-quality David Webb brooch.

The hammered gold frame is detachable, while the signature appears only on the frame, suggesting the platinum and diamond section may predate Webb.

Either way, it’s magnificent.

Available on our website.

SKU POTC1399P