Hong Kong police are investigating an alleged theft of a diamond worth US$500,000 (HK$3.88 million) that reportedly went missing from a company safe in To Kwa Wan. A man contacted the force at about 3pm on Thursday and said the gem had vanished from a safe in Peninsula Square on Sung On Street. The man said the diamond was valued at US$500,000. The Post learned that the company in question is Sheetal (Far East), the Hong Kong branch of Sheetal Group – a diamond manufacturer established in 1985...