On the GREMB, Marianne has posted several pictures of the State visit of former (West-)German Federal President Richard Freiherr von Weizsäcker (who has died last Saturday, 31st January) to Luxembourg in September 1988: http://members3.boardhost.com/Oranjes/msg/1422860401.html
On the third of these pictures (also seen below), Grand-Duchess Joséphine-Charlotte is seen wearing, besides her Belgian wedding gift diamond tiara, a brooch of triangular shape that I do not recognize:
(picture by photographer Jean Weyrich)
Does anyone recognize this brooch? And know its origins and/or whereabouts?