STEPHANIE WINDSOR + Cartier Vintage 1980s Mini Ceinture 20mm 18-karat gold, diamond, mother-of-pearl and leather watch (Fits up to 6'' wrist)

Cartier’s 'Mini Ceinture' reflects the house’s 1980s move toward jewelry-led watch design, where form is defined as much by materials as mechanics. Sourced by Stephanie Windsor, this vintage model is crafted from 18-karat yellow gold with diamond-set edges framing an iridescent mother-of-pearl dial, arranged with a precise grid of brilliant-cut stones and Roman numerals at the quarters. Powered by a Swiss-made quartz movement, it’s fitted with a leather strap that softens its structured, jewel-like profile.