▽SCMP.com - the online edition of South China Morning Post, Hong Kong’s premier English-language newspaper ●12/22 20:20 Diamonds are plunging in value around the world. Is China to blame?China’s demand for natural diamonds has ‘fallen off a cliff’ amid plunging marriage rates, while its factories are churning out synthetic alternatives that are up to 90 per cent cheaper.42 minutes agovideocam5I don’t: marriage registrations tumble, adding to China’s population woesChina deflationChina sanctions Canadian insti