Ian Harebottle, Chief Executive Officer of British precious stones miner Gemsfield, inspects a rare 40.23-carat rough ruby unearthed at its Montepuez deposit in Mozambique, during a rough ruby auction in Singapore December 4, 2014. The auction takes place from December 4 to December 8. REUTERS/Edgar Su (SINGAPORE - Tags: BUSINESS COMMODITIES SOCIETY WEALTH)