US
Criticism comes for identifying the Chinese-controlled territories of Hong Kong and Macau as countries
Similar confrontations in early July were sparked by anger over provocative "dancing aunties"
Thousands of masked demonstrators briefly occupied the road outside Beijing's office
Hong Kong witnessed its largest protest since the city's 1997 handover to China
Beijing sees calls for self-determination as part of splittist push
The necklace already holds the world record at auction after it was sold for $3.35m at Christie's in London 2012