Jagger loaned the valuables to Charles Adesanya, who told the socialite the jewellery would be used for a model to wear in a shoot for a women's publication and then returned to her.
Instead, Adesanya pawned the items - along with more gems fleeced from other jewellers - to pay off his debts.
When Jagger contacted Adesanya about the return of the items, he lied to her that they had been mistakenly couriered to Paris, France.
Only half of Adesanya's total haul, worth around $720,000 (£423,529), has been recovered.
Adesanya admitted fraud and theft between August, 2012 and May, 2013 during a hearing at London's Southwark Crown Court on Monday (28Jul14) and was jailed for four years and two months.