RTL reports that the two robbers wore masks and fired shots while in the boutique, which has a secure door entrance operated by personnel inside the premises.
The robbery occurred at around 11.30 on Tuesday morning. The two men fled in a black Renault bearing French licence plates, which was later found abandoned in Boulevard Charles Marx in Hollerich.
It is believed an accomplice was waiting for the robbers in another vehicle, a dark grey BMW 3 series estate car. Police called off their search for the robbers at around 1.45 p.m. according to the RTL report.