Little-known facts about the world-famous jeweler's diamond-making process

(Dan Tri) - With 245 years of history, this jeweler is a prestigious address for the Louvre Museum (France) to come to when it needs to restore jewelry.

Initially, jewelry was quite simple, made from natural materials such as bones, shells and stones. Over time and industrialization, jewelry making techniques have developed, turning crude items into more sophisticated and decorative items. That is thanks to the treasure trove of manufacturing secrets from long-standing jewelers around the world .

Chaumet is one of the oldest jewelers still in operation today, although it is no longer family-owned. Founded in 1780 in France, the jeweler is a favorite of European royalty and the elite.

Thanks to her exquisite craftsmanship and innovative designs, founder Marie-Étienne Nitot became the official jeweler to the court of Emperor Napoleon Bonaparte and personal jeweler to Queen Joséphine.

In addition, the world's leading art museum, the Louvre, also seeks out this jeweler to restore antique jewelry, even if the jewelry does not originate from the brand. This shows the museum's trust in the brand's craftsmanship.

To keep the brand legacy alive and maintain customer trust, 13 generations of factory managers and a team of world-class artisans have diligently passed down centuries of expertise. Among those manufacturing secrets, they are confident in the three most iconic jewelry techniques.

Pear-shape diamond

When it comes to the French jeweler, the image of pear-shaped diamonds and the Joséphine jewelry collection immediately comes to mind. This shape is so high-level and classic that it can be considered an unofficial manufacturing secret.

The pear-shaped diamond has become one of the French jeweler's signature designs.

Pear-shaped diamonds are selected and refined to a rare standard. Only stones that meet the Gemological Institute of America's 4C criteria (color, cut, clarity, carat weight) are qualified.

In addition, the brand also selects the best diamonds and cuts them according to its own 5th standard, which is harmony.

This is also the shape that Queen Joséphine especially favors. From then on, the pear-shaped diamond collection named Joséphine was born, to honor the queen. Over time, the pear-shaped shape and the collection have become symbols of elegance and boldness.

Fil-Couteau Technique

Next, fil-couteau is known as a special crafting technique. In it, the frame of the jewelry is made so thin that it is almost invisible.

Thanks to the ultra-thin frame, the gemstone stands out, creating the feeling of "floating" in space.

The crafting method creates the effect of the gemstones "floating" naturally. This technique enhances the beauty of the gemstones, ensuring elegance and lightness while still being firmly attached.

Fil-couteau is especially useful for creating designs with movement, such as "draping" earrings, necklaces or gemstones.

Trumpet technique

To help pear-shaped diamonds become more creative and airy, the French jeweler developed a special technique called trompe-l'œil. In French, this phrase means optical illusion.

Specifically, they use many small brilliant-cut diamonds, arranging them cleverly to create an optical illusion. When the brilliant diamonds are put together, they create the image of a large pear-shaped diamond.

Trompe-l'œil is an optical illusion technique that uses small diamonds to create the illusion of a larger stone.

The designer uses this technique to upgrade his classic designs, creating unique and impressive jewelry. Accordingly, trompe-l'œil is a variation of the grain-set technique, inspired by the famous Bourbon-parme crown design in history.

Photo: Getty

Source: https://dantri.com.vn/giai-tri/dieu-it-biet-ve-cach-che-tac-kim-cuong-cua-nha-kim-hoan-noi-tieng-the-gioi-20250816183513246.htm