A Rare Vintage Italian Tubogas Necklace in 14 Carat Gold with Diamonds

There are pieces that whisper, and pieces that command. This is the latter — and it does so with extraordinary restraint.

The Piece

The tubogas technique is one of the most demanding in the goldsmith's repertoire — a coiled, gas-pipe construction that moves like liquid metal, with no visible solder or seam. This vintage Italian example, hallmarked Italy 14k, takes that already complex form and elevates it further: set with 0.63 carats of diamonds across a 20mm width, it is both an engineering achievement and an object of genuine beauty. At 59.4 grams of solid 14 carat gold and 40cm in length, it wears with a presence that photographs cannot fully capture.

Era & Origin

The tubogas form has its roots in ancient Roman jewellery, but its modern expression was perfected by Italian goldsmiths in the mid-20th century — most notably by Bulgari, whose tubogas pieces from the 1940s–1960s remain among the most coveted in the world. This piece follows that same tradition: Italian hallmarked, substantial in weight, and built to a standard that has largely disappeared from contemporary production. The addition of diamonds places it firmly in the luxury tier of the form.

Craftsmanship & Details

• Metal: Solid 14 carat gold, hallmarked Italy 14k
• Weight: 59.4 grams
• Width: 20mm at widest point
• Length: 40cm with slight stretch
• Diamonds: 0.63 total carat weight
• Construction: Tubogas coil — seamless, flexible, no visible joins
• Condition: Vintage; wears and moves beautifully

The tubogas construction requires each coil to be individually formed and interlocked without solder — a technique that demands exceptional skill and cannot be rushed. Combined with the diamond setting, this is a piece that represents the very best of Italian mid-century jewellery making.

Why It's Significant

Authentic vintage Italian tubogas pieces of this weight and quality — particularly those set with diamonds — are exceptionally rare on the secondary market. The hallmark confirms Italian origin and 14 carat gold content. For the collector, this is the kind of piece that does not come around twice: a wearable example of a technique that defined an era, in a condition that allows it to be worn and enjoyed today.

Enquire About This Piece

This is a single, unrepeatable piece. If you'd like to know more we'd love to hear from you.