Paris 18k Gold Jewelry: What the Atelier Checks Before Handcrafting Your Wire

Finding a Paris 18K gold jewelry store able to hand-shape a custom piece, without resorting to industrial engraving, quickly narrows the field. 750/1000 gold, also called 18K gold, is a solid gold wire made of 75% pure gold, very different from gold-plated or gold-filled pieces. Since 2014, Atelier Paulin has hand-shaped this precious wire in its Paris workshop, for personalized jewelry bearing a word, a name, or an initial. This article details what sets 18K gold pieces apart from the Maison's other materials, how the shaping process works, the actual timelines, and the options available right in Paris.

18K Gold: What the Number 750 Really Changes

750/1000 gold, better known as 18K gold, is a solid gold wire made of 75% pure gold. It's sometimes called "the gold of French tradition," as distinct from 585/1000 (14K), which doesn't fall into this category. At Atelier Paulin, every 18K gold piece is hallmarked, certified, and hand-shaped by one of the Maison's jewelry artisans, in Paris.

Unlike gold-filled, which comes only in yellow and rose, 18K gold is available in three tones: yellow, rose, and white. It's the only material at the Maison offered in white, making it a natural choice for a ring or necklace meant to match an existing white gold piece.

This 75% pure gold content has a direct effect on the shaping process: the wire is denser in hand, taking longer to cold-work, which partly explains why its shaping timeline differs from that of silver or gold-filled. For a full breakdown of what this number really changes about the feel and finish of the piece, the atelier has dedicated an entire article to the question.

This material requirement comes with a traceability requirement: every 18K gold piece is identifiable by its hallmark, a guarantee that the wire used matches the stated fineness — a point on which French goldsmithing remains strict.

Recognizing Hand-Shaped 750/1000 Gold Wire, Not Engraved

At a jewelry store working with 18K gold in Paris, two techniques coexist on the market: hand-shaping of precious wire, and engraving, where the motif is cut into a flat surface. A hand-shaped piece can be recognized first by touch: the relief of the letters or motif belongs to the wire itself, it wasn't added afterward onto an already-finished piece.

At Atelier Paulin, a single 750/1000 gold wire is bent and formed until it takes the shape of the desired word or initial, never engraved onto a plate. The shaped wire is then reinforced with laser micro-welding at tension points, a technique that strengthens the piece without freezing its movement. Finally comes work-hardening: this cold-working of the metal, applied to the entire piece after shaping (never letter by letter), gives the wire its shape memory and long-term resilience.

This full process is detailed step by step, with visual cues to tell a truly hand-shaped wire apart from an imitation, in the atelier's dedicated guide.

Note: lettering on hand-shaped words stays entirely in lowercase, except for a capital "J" when it opens a word; the Capital and Capital Initial models, on the other hand, are uppercase by design. No accents or apostrophes are shaped, but a space can be added on request.

Shaping and Delivery Timelines from the Paris Workshop

One point comes up often with customers looking for custom 18K gold jewelry: timing. Two distinct periods need to be separated. First, shaping at the workshop: for 18K gold, allow 1 to 3 business days, versus 24 to 48 working hours for sterling silver 925 and gold-filled. This longer timeline is due to the density of solid gold wire, which requires more cold-working time.

Next comes home delivery, including transit: 24 to 72 hours, wherever the customer is located.

Paris benefits from two options the atelier offers nowhere else: coming in to have a piece personalized on site, in about thirty minutes, or same-day courier delivery. No mass-market jewelry maker offers this kind of real-time personalization, right in front of the customer.

This closeness between the workshop and the Paris customer also changes the nature of after-sales service: a piece can be adjusted, its personalization checked, without waiting on a round trip by mail. It's an advantage the atelier details further when comparing the timelines of a Paris workshop to those of a typical mall jewelry store.

Which 18K Gold Pieces Can Be Personalized at the Atelier

Not all 18K gold pieces at the Maison can be personalized, and it's worth clarifying before choosing a piece. Two modes of personalization coexist at Atelier Paulin: the hand-shaped word made to order, shaped letter by letter in the wire, and the initial, one or more letters referring to one or more names.

Among the iconic pieces available in 18K gold, the Original Personalized Bracelet remains the piece that started it all at the atelier. The Mantra Original Necklace can hold a short phrase or up to five names, while the Richelieu Duo Necklace is deliberately limited to two names for a cleaner look. On the ring side, three personalizable models exist: the Original Personalized Ring (up to 5 letters), the Original Initial Ring, and the Capital Initial Ring, available from size 48 to 62.

In terms of color, 18K gold stands out by offering white in addition to yellow and rose, an option gold-filled doesn't offer. For a piece meant to match existing white gold jewelry, this is often the deciding factor.

A symbol can be shaped on request; simply discuss it with the atelier before ordering, in store or in writing.

Caring for an 18K Gold Piece and Warranty

18K gold requires no special care: a rinse in lukewarm water with mild soap, followed by drying with a soft cloth, is enough to preserve its shine over time. It's a stable material that doesn't require the precautions specific to sterling silver 925 (prone to natural, reversible oxidation) or to gold-filled (to be removed during intense physical activity to preserve the fineness of the hand-shaped wire).

Every Atelier Paulin piece, regardless of material, is covered by a one-year warranty from the date of purchase, and presented in its own jewelry box.

One point worth knowing before ordering: a non-personalized piece is eligible for a refund or exchange, but a piece hand-shaped to order, with the word or name chosen by the customer, cannot be exchanged or refunded, since it was shaped specifically for her. This is the logical counterpart of wire hand-shaped for a single word chosen by the customer, rather than a mass-produced piece.

This distinction is worth checking before confirming an order, especially for a gift, where the chosen initial or name must be confirmed with certainty before shaping begins.