The Marine Drive police on Saturday arrested a staffer employed with a renowned jewellery chain for stealing diamonds worth Rs 12.93 lakh from a high-end jewellery showroom in south Mumbai. The arrested accused has been identified as Rinkesh Soni, a resident of Agripada.

The incident took place at the outlet run by one Ajit Arenjha in August. Izdan Malik, an employee, was showing a customer a diamond ring when the stone fell off the ring and Malik immediately informed his assistant manager about it, the police said. That day, the manager found two defective rings.