Gold in horology: a valuable metal at the center of timekeeping

Introduction: A historical and symbolic overview of gold

Gold, the precious metal that has captivated humanity since the dawn of civilization, has established itself as a symbol of wealth, power and beauty. For 5,000 years, gold has fascinated not only with its brilliance but also with its unique properties. In watchmaking, it represents more than just a material; it embodies a tradition of luxury and precision.

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Physical characteristics of gold

Gold, yellow as the sun, is distinguished by its exceptional resistance to corrosion, thus preserving its bright color indefinitely. Its ductility and density give it a specific malleability and weight, while its shine after polishing is incomparable. These characteristics make it a material of choice in watchmaking, where durability and aesthetics are essential.

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Gold in watchmaking: more than just a metal

In the art of watchmaking, gold is not used in its pure form but rather in the form of 18-carat alloys, where it constitutes 75% of the composition. This last quarter, composed of other metals, gives the alloy specific properties, particularly in terms of color and resistance.

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Shades of Gold: Exploring Colors

White gold, or grey gold, is an alloy that combines gold with pale metals such as palladium and silver to achieve its characteristic hue. However, to maintain this color, a rhodium plating is often applied, with the notable exception of Chopard which favors an alloy rich in palladium.

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Yellow gold and its variations

Yellow gold, iconic and traditional, varies in intensity depending on the proportion of copper and silver in the alloy. With shades ranging from 2N gold (official yellow) to 5N gold (pinkish red), each variation brings a unique warmth and depth to the watch.

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Rose gold: a touch of romance

Rose gold, obtained from an alloy enriched with copper, seduces with its warm and romantic hue. From 4N gold, typical of rose gold, to 5N, sometimes called red gold, these shades offer an elegant and contemporary alternative to traditional yellow gold.

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Rolex innovations: Everose gold

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Rolex, in its perpetual quest for excellence, has developed Everose, a unique alloy incorporating platinum. This innovation ensures exceptional color stability, while enhancing the prestige of their watches. It does not take place on the least expensive Rolexes.

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Hublot and Omega: pioneers of innovation

Hublot, with its King Gold, and Omega, with its Sedna Gold, have each explored innovative avenues, using platinum and palladium respectively to improve the resistance and shine of their alloys.

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Metallurgy as art: IWC and its “Hard Gold”

IWC revolutionized the use of gold in watchmaking with its “Hard Gold”. Thanks to advanced techniques, this approach made it possible to significantly increase the hardness of gold, opening up new perspectives in terms of durability and design.

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Unique initiatives: A. Lange & Söhne and Chanel

A. Lange & Söhne with its Or Miel and Chanel with its Or Beige attempted innovative approaches to improve the properties of gold. Although these initiatives were abandoned, they are a testament to the constant innovation in this field.

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Finishing techniques: sandblasting and engraving

Gold’s softness and malleability make it ideal for refined finishes such as sandblasting and engraving. Audemars Piguet, for example, uses a hammering technique called “Frosted” to create unique textured surfaces.

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Hublot and the innovation of Magic Gold

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Hublot introduced Magic Gold, a revolutionary alloy combining gold with a ceramic structure. Although its appearance and difficulty of understanding have limited its use, it represents a significant advance in terms of abrasion resistance.

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Research and development: The gold of the future

Innovative projects, such as gold made from recycled plastic developed by the Swiss Federal Institute of Technology in Zurich, highlight the potential of gold in watchmaking. This research paves the way for new applications and a more sustainable approach to this precious metal.

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Gold in luxury watch design

Gold remains a central element in luxury watch design, adding inestimable value and unique cachet to each piece. Prestigious brands continue to innovate in the use of gold to create watches that are both works of art and masterpieces of precision.

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Gold and the environment: ethical issues

Gold mining raises significant ethical and environmental issues. In response to these challenges, the watch industry is moving towards more sustainable and ethical sources of gold, reflecting a growing awareness of its environmental impact.

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The future of gold in watchmaking

The future of gold in watchmaking looks bright, with constant innovations in both alloys and finishing techniques. The combination of tradition and modern technology will continue to make gold a material of choice in the creation of exceptional watches.

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Conclusion: gold, a timeless element in watchmaking

Gold remains a symbol of prestige and innovation in watchmaking. Its ability to reinvent itself, while retaining its timeless character and unmatched brilliance, guarantees its central role in the art of watchmaking for generations to come.

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FAQs

1- What is the difference between 18 carat gold and pure gold in watchmaking?

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Pure gold, or 24 carat gold, is gold in its purest form, without alloys. In watchmaking, it is rarely used because of its softness and malleability. 18 carat gold, on the other hand, is an alloy containing 75% pure gold, with the remainder composed of other metals such as silver, copper, palladium or platinum. This alloy offers better resistance and a variety of colors, while retaining the shine and prestige of gold.

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2- How are the different colors of gold obtained?

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The different colours of gold are achieved by mixing pure gold with different metals. Yellow gold is traditionally a mixture of gold, copper and silver. White gold is alloyed with metals such as palladium and silver, often coated with rhodium to enhance its shine. Rose gold is created by increasing the proportion of copper in the alloy, giving a pinkish hue.

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3- What are the advantages of Rolex Everose gold?

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Rolex Everose gold is a unique alloy, developed to maintain its distinctive colour over time. By incorporating platinum, this alloy ensures greater colour stability and increased resistance to oxidation, while adding a touch of prestige and luxury to the watch.

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4- How does innovation in gold alloys influence the durability of watches?

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Innovations in gold alloys, such as the addition of palladium or platinum, not only improve the color and aesthetics of gold, but also increase its resistance to oxidation and abrasion. These advances make it possible to produce more durable watches that can maintain their luster and structural integrity over a longer period of time.

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5- What are the environmental implications of using gold in watchmaking?

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Gold mining has significant environmental consequences, including landscape degradation, water pollution and social conflict. The watch industry is working to find more sustainable sources of gold, such as ethically certified or recycled gold, to reduce its environmental impact.

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6- How could current research transform the use of gold in the future?

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Current research focuses on developing new alloys and gold processing techniques to improve its physical and aesthetic properties. Innovations such as gold made from recycled plastic or high-strength alloys are paving the way for more sustainable and varied uses of gold in watchmaking, while preserving its prestige and beauty.

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