Yes, sure - the Braganza tiara, the Brazilian flower spray brooch, the longer diamond collet necklace with large diamonds and the pear-shaped earrings Queen Silvia had made from two unset stones in the late 70s make up the Brazilian jewelry inheritage from Empress Amalia. Not really a set in terms of 'matching' and 'originally made at the same time', but the pieces do have the same provenance.
Screenshot of the 'set' from the TV documentary (with the Braganza tiara photographed at an odd angle):
--Previous Message-- : In the documentary - De kongelige juveler - : gennem generationer - we got to see a photo : with a set they say belong togather and : never shown togather : : Diadem, necklace, earings and flower brosch : :