Dozens of pieces of gold valued at around €200,000 were stolen from a jewellery store in Quarteira on December 2.
According to the owner of Madisson, the images captured on CCTV show three hooded individuals entering the store after breaking through two armoured doors with a crowbar.
The robbers took several pieces of gold, including rings and bracelets.
PJ police are now investigating the case.
It is the second time the family-run business has been targeted. On October 29, Carilor at AlgarveShopping in Guia, which also belongs to the family, was broken into and dozens of gold and silver items stolen.