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The Sartory Billard SB04-E Full Aventurine is a distinctive expression of independent watchmaking, combining sculptural architecture with the natural beauty of solid aventurine. Known as the SB04-E Aventurine Starry Night, its dial is carved from a single block of deep midnight-blue aventurine, creating a unique celestial landscape filled with natural metallic reflections. Because each stone forms differently, every watch features its own one-of-a-kind pattern. Floating above the aventurine is Sartory Billard’s signature 0.3mm sapphire disk, treated with anti-reflective coatings on both sides. This transparent architectural layer carries the hour markers while preserving the uninterrupted depth of the stone beneath. Diamond-cut even-numbered markers contrast with the BGW9 Super-LumiNova® minute track and odd-numbered indexes, creating the collection’s distinctive Y-shaped layout. The sculpted hour and minute hands are finished by hand and filled with BGW9 Super-LumiNova®, while the slender seconds hand sweeps across the aventurine like a comet. The 39.5mm stainless steel case combines polished and brushed surfaces, with curved drilled lugs and a concave bezel designed to enhance the dial’s visual depth while maintaining comfortable wrist proportions. Inside, the SB04-E is powered by a Swiss-made La Joux-Perret automatic movement with an impressive 68-hour power reserve. The refined caseback continues Sartory Billard’s design language, while the 7mm screw-down crown features multiple contrasting finishes and a luminous embossed emblem. With 100m water resistance, an ergonomic dark blue rubber strap and the option of a Sartory Billard stainless steel bracelet, the Sartory Billard SB04-E Full Aventurine balances artistic craftsmanship, mechanical precision and everyday wearability. More than a timepiece, each example is a unique fragment of the night sky captured in solid stone.
The Sartory Billard SB04-E Full Aventurine is a distinctive expression of independent watchmaking, combining sculptural architecture with the natural beauty of solid aventurine. Known as the SB04-E Aventurine Starry Night, its dial is carved from a single block of deep midnight-blue aventurine, creating a unique celestial landscape filled with natural metallic reflections. Because each stone forms differently, every watch features its own one-of-a-kind pattern. Floating above the aventurine is Sartory Billard’s signature 0.3mm sapphire disk, treated with anti-reflective coatings on both sides. This transparent architectural layer carries the hour markers while preserving the uninterrupted depth of the stone beneath. Diamond-cut even-numbered markers contrast with the BGW9 Super-LumiNova® minute track and odd-numbered indexes, creating the collection’s distinctive Y-shaped layout. The sculpted hour and minute hands are finished by hand and filled with BGW9 Super-LumiNova®, while the slender seconds hand sweeps across the aventurine like a comet. The 39.5mm stainless steel case combines polished and brushed surfaces, with curved drilled lugs and a concave bezel designed to enhance the dial’s visual depth while maintaining comfortable wrist proportions. Inside, the SB04-E is powered by a Swiss-made La Joux-Perret automatic movement with an impressive 68-hour power reserve. The refined caseback continues Sartory Billard’s design language, while the 7mm screw-down crown features multiple contrasting finishes and a luminous embossed emblem. With 100m water resistance, an ergonomic dark blue rubber strap and the option of a Sartory Billard stainless steel bracelet, the Sartory Billard SB04-E Full Aventurine balances artistic craftsmanship, mechanical precision and everyday wearability. More than a timepiece, each example is a unique fragment of the night sky captured in solid stone.