Police inspector A B Honmane of the Local Crime Branch said the complainant was a diamond merchant who conducts his business through 'Simi Diam China Ltd'.
The accused, one of them hailing from Virar in the district and others foreign nationals, worked at the Shanghai office of the company.
Last year they were handed over diamonds for sale in Shanghai but they fabricated the accounts and syphoned off Rs 110 crore, the complaint states.
As one of the accused hails from Virar, the company last evening registered a case under section 420 (cheating) and other relevant offences under the IPC at Virar police station, said inspector U Shaikh of local police.
No arrest has been made yet.