Cartier. An Art Deco brooch, London, circa 1930. Platinum, diamonds and amethyst, 4.7 x 3.7 cm. Signed 'Cartier'. VKD Jewels © TEFAF 2018

A brooch of strong geometric design, composed of two tapering series of rectangular-shaped amethysts, embellished with circular-, baguette- and marquise-shaped diamond accents, mounted in platinum, circa 1930, signed Cartier London and numbered, maker’s mark for Cartier, stamped PT950 for platinum.

Van Cleef & Arpels. A pair of 'Tourbillons earrings, Paris, Circa 1952, 2.5 x 2.5 cm (1 x 1 in.). Signed 'Van Cleef & Arpels' and numbered, maker's mark and assay marks for the platinum. VKD Jewels © TEFAF 2018

Centring on a brilliant-cut diamond within an overlapping spiral of baguette-cut diamonds trimmed with graduated brilliant-cut diamonds, mounted in platinum.

VKD Jewels (Stand 245) at TEFAF Maastricht, March 10-18, 2018