French Art Deco Ladies Diamond and Sapphire Cocktail Watch by Léon Hatot

More than a timepiece, this platinum wristwatch by Léon Hatot is wearable art from an era of bold innovation. With 118 shimmering diamonds and 48 vibrant sapphires arranged in precise symmetry, it reflects both the glamour of the Roaring Twenties and Hatot’s distinctive approach to horology: elegant, modern and ahead of its time. His name may have faded from common memory, yet among connoisseurs, it still commands quiet reverence. As a trusted supplier to maisons such as Cartier, Boucheron and Van Cleef & Arpels, Hatot created for those who recognised that a wristwatch could be far more than functional: a fusion of decorative brilliance and refined mechanics, still rare today. In very good condition, this piece remains a radiant echo of the moment when design, technology and personal taste aligned at the wrist.

Condition
Very Good

Country of origin
France

Period
Circa 1920

Material
Platinum (touchstone tested)

Extra information
Léon Hatot (1883–1953) was a French engraver and watchmaker known for uniting artistic finesse with technical innovation. After taking over Brédillard’s atelier in 1911, he became a valued supplier to leading Rue de la Paix jewellers suchas Boucheron, Cartier and Van Cleef & Arpels. His work stood at the intersection of modern design and mechanical refinement, anticipating the fusion of jewellery and timekeeping as wearable art.

Diamonds
Six old brilliant cut with an estimated weight of ± 0.48 carat
112 single brilliant cut diamonds with an estimated weight of ± 2.00 carats

Total diamond count
118 stones

Total diamond weight
Approximately 2.48 carats with an average colour F/J, and clarity VS/I

All diamond weights, color grades and clarity are approximate since stones are not removed from their mounts to preserve the integrity of the setting.
All diamonds we offer are screened by the I.J.G.C. for whether they are natural or synthetic, and all diamonds in this jewel are 100% guaranteed to be natural.

Precious stones
48 sapphires
It is a very common practice to treat gemstones to intensify their clarity or colour. The item in question has not been tested in this regard.

Hallmarks
Mastermark LH for Leon Hatot and  the French control mark for platinum representing a dog's head that was in use in France from about 1912.

Dimensions
Case width 2.30 cm (0.91 inch)

Weight
22.00 grams (14.15 dwt)