Wonderful 2000 year old Saphire ring presumably belonged to Roman Emperor Caligula, thought depicting his fourth wife Caesonia .

Probably one of the top 3 most pervert and sadistic leaders of Roman era. Only his predecessor was worse than Caligula - his name was Tiberius. And they both ruled in the 1st century. So guess who came after Caligula? Emperor Nero of course.