A 4.54 carats Mozambique 'Pigeon Blood' ruby and diamond ring. Estimate HK$ 1.3 million - 1.6 million (€160,000 - 200,000). Photo: Bonhams.

The cushion-shaped ruby, weighing 4.54 carats, between similarly shaped diamonds, weighing 2.02 and 2.01 carats, ring size 6

Accompanied by a GRS report stating that the natural ruby is of vivid red colour - GRS type pigeon blood colour, has no indication of heat treatment and originates from Mozambique. Report number GRS2014-051256, dated 31 May 2014.

Accompanied by an AGL (American Gemological Laboratories) report stating that the natural ruby has no indication of heat treatment and originates from Mozambique. Report number CS 61943, dated 9 July 2014.

Accompanied by two GIA reports stating that the 2.02 and 2.01 carat diamonds are both G colour and VS2 clarity. Reports number 6167095963 and 6172255355, dated 21 May 2014 and 07 May 2014

Bonham's. RARE JEWELS & JADEITE, 30 Nov 2015 17:00 HKT - HONG KONG, ADMIRALTY