The L'Incomparable Diamond necklace is displayed by Jeweller Mouawad during a media preview ahead of the Singapore JewelFest which will be held on Oct. 11 to 15 in Singapore, Oct. 4, 2013. (Xinhua/Then Chih Wey) 

The L'Incomparable Diamond necklace is displayed by Jeweller Mouawad during a media preview ahead of the Singapore JewelFest which will be held on Oct. 11 to 15 in Singapore, Oct. 4, 2013. (Xinhua/Then Chih Wey)

The L'Incomparable Diamond necklace is displayed by Jeweller Mouawad during a media preview ahead of the Singapore JewelFest which will be held on Oct. 11 to 15 in Singapore, Oct. 4, 2013. (Xinhua/Then Chih Wey)

 The L'Incomparable Diamond necklace is displayed during a media preview ahead of the Singapore JewelFest which will be held on Oct. 11 to 15 in Singapore, Oct. 4, 2013. (Xinhua/Then Chih Wey)