A ruby and diamond necklace. Photo Christie's Image Ltd 2013

The detachable pendant/brooch designed as a pavé-set diamond stylized bow enhanced by rectangular-cut rubies and flanked with two larger brilliant-cut diamonds, weighing approximately 1.83 and 1.79 carats, to the brilliant and baguette-cut diamond twin-line neckchain with tied ribbon motifs, 1950s, 43.0 cm. Estimate CHF10,000 – CHF18,000

Christie's. MAGNIFICENT JEWELS. 15 May 2013. Geneva