Rare Cartier by Henri Picq Platinum Carved Sapphire Intaglio Stick Pin
A Masterwork of Early 20th-Century Craftsmanship by Cartier’s Renowned Henri Picq
A magnificent and exceedingly rare creation by Henri Picq for Cartier, this platinum stick pin exemplifies the technical mastery and aesthetic sophistication that defined the Maison’s early 20th-century artistry.
At its center rests a carved blue sapphire intaglio, engraved with cuneiform-inspired motifs reminiscent of ancient Mesopotamian script. The engraving captures both mystery and elegance, while the sapphire’s deep translucence radiates an ethereal glow under light.
Meticulously mounted in platinum, the piece showcases Picq’s legendary precision and Cartier’s pioneering embrace of platinum during the Belle Époque era. Henri Picq’s workshop was among Cartier’s most important suppliers, crafting many of the firm’s most intricate platinum jewels between 1900 and 1918.
This rare jewel unites ancient symbolism and modern refinement—a sculptural testament to the collaboration between Cartier and one of its greatest master craftsmen.
Details:
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Maker: Cartier by Henri Picq
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Period: Early 20th century
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Material: Platinum
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Gemstone: Carved blue sapphire intaglio
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Engraving: Cuneiform-style motif
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Origin: France
A museum-quality jewel, this exceptional stick pin embodies the spirit of innovation and artistry that placed Cartier at the forefront of fine jewelry design.
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Buy with confidence. Every piece is backed by:
• Authenticity — examined and verified before listing
• Condition — carefully inspected and honestly described
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• Experience — over 50 years of fine jewelry expertise
How do I know a piece is authentic, and can I trust DSF?
Buying fine jewelry online takes trust, especially at this level. DSF Antique Jewelry is a New York–based dealer with over 50 years of fine jewelry expertise. Every piece is examined for authenticity and condition before it is listed — we assess hallmarks, maker's marks, metal content, gemstones, and construction consistent with the stated period or designer. For signed pieces such as Cartier, Buccellati, or Van Cleef & Arpels, we verify maker's marks and signatures. We're glad to send additional photographs of any hallmark, or speak with you directly, before you decide.
Why does antique gold look different, and is surface wear normal?
Antique pieces were often made in gold standards less common today, such as 15ct (used in Britain only between 1854 and 1932), 9ct, or higher-karat continental gold, which give a warmer tone than typical modern 14k. Light surface wear, softened edges, and a gentle patina are normal and expected on antique jewelry — they reflect the age and authenticity of the piece, not flaws. We describe the true condition of every item honestly in its listing.
What do the hallmarks and maker's marks mean?
Hallmarks are small stamped marks that identify the metal standard, and often the maker, assay office, and date. They are one of the best tools for authenticating antique jewelry. We identify and explain the marks we find on each piece in its description, and we're happy to send close-up photographs of any hallmark on request so you can see exactly what you're buying.
Can pieces be resized or adjusted?
It depends on the piece. Many antique rings can be resized, but bands with all-around engraving, thin shanks, or gemstones near the base may be limited in how far they can safely go, and some pieces are best left as-is to preserve their integrity. We list each item's measurements as they currently are. If you're unsure whether something can be safely adjusted, contact us before buying and we'll give you an honest assessment for that specific piece.
How should I care for and store fine jewelry?
Clean gently with a soft cloth, avoid harsh chemicals, ultrasonic cleaners, and chlorine, and store pieces separately so they don't scratch one another. Remove rings and bracelets for heavy manual tasks. Antique gold is softer than modern alloys, so period pieces are best enjoyed with normal care. Treated well, fine antique jewelry lasts for generations — many of our pieces are already a century or more old and still beautiful.
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