In 2016, Hublot began to work with sapphire, a totally transparent and ultra-resistant material that is complex to machine. In 2017, Hublot successfully created large colored sapphires, despite the complexity, unpredictability, instability, and lack of homogeneity in the fusion and crystallization of sapphire.

Sapphires now dress the Big Bang Unico, the Spirit of Big Bang and even the MP-05 LaFerrari in transparency with the result being watches whose external parts have become invisible and that reveal all of their architecture and movement.

After transparent, smoked black, red and blue, Hublot introduces a new primary color to the chart: yellow. To give sapphire its solar hue, Hublot fused copper (Cu) with aluminum oxide (Al2O3). A colored sapphire that conserves all of its initial properties as the most scratch-resistant and transparent material, one of the hardest that exists. It’s the first time in the history of watchmaking that sapphire has been colored yellow.

As hard and scratch-resistant as diamond (9 on the Mohs scale, versus 10 for diamond) and as light as titanium, the watch is just 107 grams on the wrist.

Released in only 100 pieces, the Spirit of Big Bang Yellow Sapphire houses a self-winding skeleton chronograph movement, entirely “Hublotized” in its architecture and its finishing, from the Zenith El Primero calibre.

How much?

UK price: £88,000

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