An impressive diamond rivière necklace. Photo Bonhams.

Designed as a continuous row of fifty-five brilliant-cut diamonds, the largest weighing 5.02 carats, each diamond within a four-claw setting and graduating in size to the center, to a concealed clasp, diamonds approximately 90.25 carats total, length 43.0cm. Estimate HK$ 2.7 million - 3.5 million (€250,000 - 330,000)

Bonhams. FINE JEWELLERY & JADEITE. Hong Kong, Admiralty, 21 May 2014 - www.bonhams.com